u/redbeard7777777

As Hagrid brought Harry to London and Diagon Alley to get him ready for his first year at Hogwarts, Harry looked over his list of textbooks he needed to buy. One book in particular quickly caught his attention. A Beginner's Guide to Brewing Potions by Lily Potter.

Harry really didn't know anything about his parents. Just mean and probably inaccurate comments from the Dursley's considering all they had lied about. Now he knew his mum had a job writing potions textbooks, apparently while hiding from a dark wizard.

At the book store Harry picked up not just A Beginner's Guide to Brewing Potions, but also An Intermediate Guide to Brewing Potions and An Advanced Guide to Brewing Potions, both also by his mother. Hagrid didn't say anything about them not being on his list, but did give him a pat on the back. Harry spent as much of the rest of the summer as he could looking at his new textbooks. At least half that time was spent looking at the ones his mother wrote. He wanted to be good at potions like her.

He also started to wonder what his dad did and what his favorite type of magic was.

Years later while exploring the castle Harry came across an old potions textbook that belonged to his mother, and was full of corrections and notes in the margin.

Going into his sixth year Harry would be quite surprised to see yet another book by his mother on his school supplies list. A Guide To Dark Magic and Defense by Lily Potter.

Toward the end of the summer before Harry's fourth year at Hogwarts, Sirius Black made an effort to reconnect with his cousin Andromeda Tonks and her family. This leads him to introducing Harry to Tonks and they quickly become friends.

Months later, Harry is entered into the Triwizard Tournament. During the next Hogsmeade visit he meets with Tonks, so she can help him prepare for the Tournament. While discussing his skills in defense against the dark arts, Harry mentions that Mad Eye Moody taught him how to resist the imperious curse. When asked to elaborate, Harry says that he's been casting the spell on the students. Tonks then explains that being the Hogwarts defense professor doesn't make him casting Unforgivable curses on students legal. By the end of the afternoon, Tonks and a team of aurors have arrested Mad Eye Moody. That's when they discover that he's really Barty Crouch Jr.

Tonks explains her connection to Harry as distant relatives connected by Dorea Black and Charlus Potter.

Without Barty Crouch Jr's arrest everyone acknowledges that Harry didn't enter the Triwizard Tournament himself. Without interference from Brarty Crouch Jr, Harry still does fine in the Tournament but doesn't win.

Izuku's quirk gives him the ability to cast spells like a Dungeons and Dragons cleric. Originally Izuku had no idea how long it would take him to learn the higher level spells or if he ever would be able to. By the time he was getting ready for the entrance exam Izuku had only mastered up to his second level spells. That still gave him a lot of variety. He had several minor magic tricks, spells to heal or buff himself and friends, and direct combat spells. Spiritual Weapon was great for the entrance exam.

After the entrance exam, Izuku accepted One for All from All Might. He was glad his mentor agreed to let him take the entrance exam with his own quirk. Now in addition to giving him super strength All for One is helping him level up is spell casting faster. He just has to master his new abilities.

When the USJ is attacked Izuku gets to use his Turn Undead ability for the first time ever, and the nomu runs away from him.

While fighting Stain in Hosu Izuku learns to cast the third level spell Spiritual Guardians. It manifests the vestiges in temporary physical forms. Even without being at full power they kick the hero killer's butt. Afterwards, Izuku spends hours traveling between makeshift first aid stations to cast Spare The Dying on everyone he can. He will forever remember the pain the League of Villains is willing to cause innocent people, and how they dishonored the dead to do it.

At the training camp Izuku defeats Muscular. After healing himself, he is able to capture Himiko Toga by casting Hold Person on her. Shortly afterwards All Might fights All For One, rescues his students, and retires.

Months later the villains return with reinforcements and stronger than ever. After the first war Izuku casts Raise Dead on Midnight and Gran Torino.

Shortly before the second war Izuku is finally strong enough to cast Regenerate on All Might, and heal his wound. From there it isn't hard to figure out how to reignite his embers. Izuku also casts Regenerate on Aizawa and Miruko.

In the final war Izuku and All Might face All For One and Shigaraki. Izuku casts Spirit Guardians and All for One gets jumped by every One for All user. He tries to get his nomu to back him up, but Izuku uses his Destroy Undead ability on them. The self proclaimed demon lord falls before the Cleric Hero: Dekiru.

Izuku is nearly ten years older and met All Might years ago. Shortly after All Might was injured defeating All For One he passed One For All on to Izuku. He then retired, got proper medical treatment, and became a UA teacher. Izuku made his way up the ranking and took the number one spot from Endeavor, but he still hasn't become a symbol like All Might.

When the League of Villians attacks the USJ on a day Izuku was supposed to do a guest lecture, Izuku defeated the nomu, arrested Shigaraki, and learned All For One was back. Considering that All for One was almost lost when All Might was almost died fighting All for One, Izuku starts look for a successor immediately. During the USJ attack he was particularly impressed by the student Pony Tsunotori.

He offers her an internship after the sports festival, and at the end of the week offers her All for One. It hits singularity days later. Now shes undergoing a growth spurts, learning to control ten horns, run on air, and use an energy lasso. Back at UA Pony's getting extra training with All Might, meanwhile Izuku leads the fight against the League of Villains.

Pony quickly starts to become an accomplished hero in her own right, helping fight Wolfram on I-Island, working with Star and Stripe during the World Hero Mission, and rescuing Eri from the yakuza. Izuku on the other hand defeats Nine, Dark Might, and eventually All for One.

When All Might met Izuku he didn't have the time to directly supervise him, so he put Gran Torino in charge of training this successor from the start. Izuku unlocked full cowl before the entrance exam. He then won the sports festival and interned under Sir Nighteye. During the summer camp Izuku had one on one sparring sessions with All Might every day until the League attacked and kidnapped Bakugou.

Now Izuku stood in Kamino Ward watching All Might clash with All For One. His classmates had already evacuated Bakugou. He was joined by Gran Torino, who had noticed his presence after helping defeat the nomu. They were soon joined by some of the other heroes on the scene.

All Might and All For One continued their fight until All Might's muscle form collapsed. That's when it happened. Instead of continuing to fight, All Might tapped out and conceded. He admitted that All For One had won their battle, but before he could claim victory he had to defeat his successor. He called for Izuku to come out and fight One For All.

Izuku (and Gran Torino) tried to protest and say he wasn't ready but All Might just told him that he was stronger than even he realized and insisted that he take over thw fight. And Izuku was starting to believe him, with All for One already tired from fighting All Might, Izuku could maybe win if he was careful.

Then All Might gave All for One a senzu bean, (long story short, UA had recently found a cat with a crazy healing quirk), restoring All For One to his current full strength. All Might insisted they have a fair fight. With that Izuku knew that being careful had been thrown out the window and he that he would have to give the fight his all.

Half an hour later an exhausted Izuku collapsed next to the body of All for One. He did it. Over the course of the fight his control of One for All had gone from 30 to 45 percent, and he had unlocked float, danger sense, and black whip. Izuku won. All Might retired. Class next Monday was going to be interesting.

Part 1 https://www.reddit.com/r/BokunoheroFanfiction/comments/1ttnnme/a_titan_snaped/

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Ochako Uraraka was eating dinner alone in her apartment, a heartbeat later the lights were off and her apartment was mostly empty. As she looked around with confusion and growing panic, her phone started ringing. When she finally answered it was her father, and he sounded desperate to hear her voice. 

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5 years, she and half the people in the world had disappeared for 5 years. 

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As disastrous as half the population disappearing had been, their return was no less challenging. Her father, thinking himself a widower, had remarried last month. The job market was going crazy, and getting productions back up meets everyone's need was a challenge. 

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Things changed at UA too. She moved into their new dorms. Half her old class had already graduated and she was placed in a class with the other students who had disappeared. Midnight was their teacher because she could catch them up on the last five years, and how heroics had changed. In only five years her old friend Izuku had become the number 2 hero. 

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—

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Izuku was in his apartment eating dinner with girlfriend and daughter Eri, when suddenly his mom was back. While she was surprised by her son looking older, and the woman and girl she had never seen before, Izuku pulled her into a crushing hug. As she was being hugged, the woman rushed out the door, saying something about her family. Then Izuku rushed out the door to punch aliens in New York. Inko was left to get to know her granddaughter and hopefully get an explanation for what was going on. 

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The next day Izuku flattens Overhaul and his returning subordinates. The League of Villains also returns, but now Izuku is stronger than the prime All Might, and doesn't take kindly to them attacking his old classmates, and trying to tear down the society he spent years helping to rebuild.

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On the night James and Lily died, Sirius picked up baby Harry and dropped him off with his cousin Andromeda before Hagrid arrived in Godric’s Hallow. Harry lives with the Tonks family and grows up as a halfblood. Unlike muggleborns, he knows about magic and meets other magical children before Hogwarts, but also has plenty of everyday muggle experiences that many purebloods don't.

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He grows up reading Beedle the Bard, and watching old Disney movies. Some weekends they go to Zonko's and Honeydukes, other weekends they go bowling. They have an owl for wizarding mail and a telephone to call grandma and grandpa Tonks. Harry plays quidditch at Hogwarts but is also in a summer soccer club. Summer grilling involves hamburgers and butterbeers.

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Melissa always wanted a quirk and shortly before entering high school she decided to create one for herself. Using the power of mad science and a blood sample from her uncle All Might, she created a serum that would give her a copy of his quirk. Actually, she created enough of the serum for herself and her online best friend Izuku Midoriya.

The serum worked, but not how Melissa intended. Over the next month she develops the quirks float, fa jin, gearshift, and stockpile. At the same time Izuku develops blackwhip, danger sense, smokescreen, and transfer.

Melissa attends UA as a hero and support student. She is starting her second year as Izuku is starting his first. Izuku's danger sense quirk prevents class 1A from entering a trap at the USJ. Melissa and Izuku both win the sports festival for their year. Melissa gets an internship offer from Sir Nighteye. On her first day he rants about her not being worthy of One for All and insists she give All Might's quirk to Lemillion. She has no idea what he's talking about and leaves, informing both Nighteye's sidekick and her homeroom teacher that the man is unwell. On her way back to UA she bumps into Eri, and flies her to the nearby Ryukuyu hero agency. Izuku gets an internship with Edgeshot. They go to Hosu and Izuku captures Stain.

Things get awkward when All Might's successor, Toru Hagakure, starts to develop Izuku and Melissa's quirks.

Looking back everything started to change the year Harry was entered into the Triwizard Tournament. First, Katie Bell asked him to the Yule Ball, and afterward they started dating. Second, Madeye Moody gave Harry advice for the Tournament more regularly. At the end of the year when Moody was revealed to be the death eater Barty Crouch jr, Harry felt a deep sense of betrayal. It was accompanied by a complete loss of faith in Professor Dumbledore's ability to protect his students and know what was happening in the castle, and an appreciation for the effectiveness of the dark arts.

Next year, Harry stopped Umbridge from torturing students by putting her under the Imperius curse. He still starts and teaches the DA. Later in the year Harry and his friends still nearly die in the Department of Mysteries. Sirius died and Harry used the cruciatus curse on Bellatrix.

In sixth year, Katie dies during an attempt on Dumbledore's life. Harry starts to teach the DA dark magic so they can protect themselves. At the end of the year, Harry and Dumbledore go to retrieve the horcrux in the cave. When they get back to Hogwarts Draco has let the death eaters into the castle and cornered the pair on the astronomy tower, along with Professor Snape. Harry casts first and Dumbledore watches as Harry first uses the killing curse on Professor Snape, and then disarms Draco. Draco lives only long enough for Harry to confirm he was responsible for Katie's death. As Harry leads Dumbledore to the infirmary he sees maybe half a dozen dead death eaters, all killed by Harry's friends in the DA.

After Professor Slughorn asks her about Hector Dagworth Granger, Hermione does some research and discovers that she does in fact have some wizarding heritage.

She also discovers that Hector Granger and his friend Henry Potter created a currently unfulfilled marriage contract between their descendants.

Now Hermione has to grapple with the fact that she isn't as muggleborn as she thought. At the same time she and Harry are reevaluating their relationship, considering whether they want to break the contract and suffer the penalties, or try dating each other.

Izuku was born 20 years earlier. On the morning of his 5th birthday his quirk manifested in the form of a small fox dog that he found sleeping at the foot of his bed. He named it Eevee. Over the next year they became good friends.  

On his 6th birthday he was surprised when he woke up with a fish flopping on his bed. He rushed it into the bathtub, and then showed it to his parents. That morning they bought a fish tank for his new Magikarp. They also started to wonder how many pets Izuku's quirk would eventually create for him. 

Over the next three years, space in their apartment became tight as Izuku's quirk summoned a Bulbasaur, Charmander, and Squirtle. With the arrival of these three Izuku learned that his new friends had quirks of their own. When he was nine the Midoriya's moved to the countryside. The extra space was appreciated as Izuku's quirk continued to create more of these creatures that he had decided to call Pokemon. These included a living magnet, a sentiment pile of seeds, and a small bird. 

On Izuku's sixteenth birthday he made a new friend that he called Larvitar. That was quickly overshadowed when Bulbasaur, Charmander, and Squirtle all started to glow and underwent growth spurts. This resulted in them getting substantially stronger. Later that year Izuku would bring 6 of his Pokemon with him and pass the entrance exam for UA's hero course. 

Over the years Izuku's quirk continued to summon Pokemon, and they continued to grow stronger. He became first a pro hero and then a teacher at UA. The year he turned 35, Izuku would summon his last and strongest Pokemon, Zapdos.

Izuku's friend All Might introduced him to Melissa Shield, a young genius who also had a quirk that summoned Pokémon, and who was making support gear for hers. Her Gabite was particularly strong.

Izuku adopts Eri and one day Eri finds a Pokemon egg in her room.

Bam! The girl with brown hair punched out the zero point robot. A robot that, despite being the size of an office building, was shorter than her. It was such a cool quirk, and Izuku was happy that the nice girl that had kept him from tripping was probably going to get into the hero course. Meanwhile, Izuku had failed the hero course exam, with no villain points, no rescue points, and no idea how to use his quirk. Maybe All Might should have given him One For All last week, or maybe not at all.

Bam! The next morning Izuku would wake up and crash into the ceiling as he got out of bed. That was probably One For All kicking in, except it wasn't super strength but flight. As he tried to get back to the floor he manifested a second quirk, one that took the form of ropes of black energy. Izuku spent the rest of the week trying to contact All Might, but he wasn't answering. It wasn't until Izuku got his letter from UA, letting him know he'd been accepted into general education, that All Might agreed to meet him at the beach.

Their meeting at the beach went okay. Izuku and All Might apologized to each other. Izuku showed All Might his new quirks. All Might told him that he was using his own master's quirk, and thought black whip might have belonged to one of her predecessors. All Might also explained that he originally would have trained Izuku during hero class, and that now he wouldn't have time to both teach class and personally train him, but promised to introduce him to his old teacher Gran Torino.

Gran Torino was a demanding taskmaster, but thanks to his training, Izuku felt he was ready for the sports festival, even without super strength. First was an obstacle course. It wasn't particularly challenging when he could fly. He got first but the giant girl put on the more visually impressive performance first throwing around a pair of zero pointers, and later running through the mine feild and just ignoring the small (to her) explosions. That was followed by a cavalry battle. Izuku partnered with a pink haired girl with a jet pack, a boy with a bird head and living shadow, and a green haired girl that could split into pieces. The giant girl, identified by the score board as Uraraka, had a frog girl sitting on her shoulder and two other girls standing on her shoes. His team tried to fly around and get her team's headband (on the frog girl), while she kept trying to grab him and not step on anyone else.

In the final tournament round Izuku beat a boy with a hardening quirk, Bakugou, and an American girl with flying horns. Uraraka beat a boy with a hardening quirk, a girl with vines for hair, and Endeavor's son. The final match was between the two of them. Izuku eventually won by tying up her legs with black whip and tripping her out of bounds. By the end of the day Izuku had earned himself a spot in the hero course.

Both Izuku and Uraraka got internships with the top 10 hero Ryukyu. Ryukyu was a great teacher. She covered the basics with both of them, but she spent more time with Uraraka than she did with him during training sessions. Teaching the young giantess both how to better avoid collateral damage at full size and how to be more effective at normal size. Izuku on the other hand spent more time with her sidekick and current UA third year Nejire. While some might have seen that as a slight, it was honestly a testament to her own skill. She helped him improve his flying and ranged combat skills in both open and enclosed spaces. During a patrol they did together they even saved a little girl that was being hurt by the yakuza. Izuku and Uraraka also had some sparring sessions together during training and she was particularly motivated to beat him, having declared him her rival after their sports festival battle.

Half way across the galaxy America's number 2 and 3 heroes lost to a mad titan. In a remote African country, the king and a man out of time also failed to stop him. The titan used an artifact as old as the universe wiped out half of all life.

It was an evening in Japan when it happened, about a month after the sports festival. Izuku was having supper with his mother when she turned to dust. He heard screams outside over his own wailing. Looking out his window, and through his tears, revealed the same happening to more people. There was no discernible cause, no villain to fight, no way to stop it. 

The next couple days were a blur, he calmed down enough to help others. While the remaining heroes put out fires and prevented looting, he cleared roads by moving crashed cars. It took a while to verify who was missing. Many children needed new guardians. Izuku doesn't even remember where he met her, but he took in a horned girl named Eri. Taking care of her helped him compartmentalize his own pain. Eventually there was nothing to be done but pick up the pieces and rebuild as best as they could. 

Things changed at UA. The two hero classes now fit into a single room. His friends Uraraka and Todoroki were among the students that disappeared, so was Bakogo. Eraserhead was gone and the now joint class was taught by Midnight. Thirteen became the acting principal, because she was still recovering from the USJ attack. UA starts to offer on campus housing to students in need. The third year hero students spent more time in the field than at school.

Over the next five years, the League of Villains would be largely forgotten as new villains emerge. Izuku personally fought some of the worst of them: Wolfram, Nine, Flect Turn, Dark Might. Shortly after graduating he was already the number 2 hero behind Endeavor. The man clearly cared less about the ranking than he used to.

The disappearances still hurt, Izuku missed his mom and first friend. He wishes Eri could have met them. But after five years the world was setting into its new normal. Izuku was starting to contemplate what he wanted in life beyond being a hero.

His to do list

Tell Professor Dumbledore about the ring and the number of Horcruxes

Have Sirius and Kreacher help him destroy the locket

Stop Snape from killing Dumbledore 

He would add catching Barty Crouch jr, but fake Moody already ran off as soon as he realized Harry was a time traveler, and could possibly know his plan and identity.

Boom! a boy breaks his arm and legs punching a giant robot and disappears.

Boom! an invention explodes and the boy working on it disappears.

Boom! a boy with two broken legs and a broken arm appears out of nowhere and falls from the sky above the testing site.

Boom! a boy appears out of thin air and is thrown through a workshop door.

Heroines and heroes/ teachers at the UA entrance exam rush to check on the disappearing and reappearing prospective student.

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Izuku finds himself in a world where only women have quirks and another Izuku finds himself in a world where both men and women can have quirks. Earlier that morning they were each struck with a quirk that swaps them with an alternate universe version of themself for one year.

Main timeline Izuku ends up in this UA's sole heroine course. It only has 16 students. They include the girls that would be 1A &B in his home universe plus Camie Utsushimi and Himiko Kan (the adoptive daughter of the man who would be Vlad King). His homeroom teacher is Midnight, Mrs. Shimura is the principal, and Mr. Yagi teaches gym class. He is one of several non hero teachers at the school. Izuku's classmates don't make a big deal about him being a man because they assume he's trans. Izuku now has to master One For All in a world where no one has ever seen a quirk like it before.

Izuku being the hero nerd that he is checks this new world's hero rankings. Without All Might, Ryukyu is the top heroine, alongside her sidekick Burnin. Endeavor is the number two hero, but this Endeavor is a white haired woman, 20 years younger, with an ice quirk. Miruko is the number 3 hero. The Wild Wild Pussycats team ranks 4th. In 5th place is Mount Lady, a newer hero who has been quickly rising in the ranks. Last year the 5th spot was held by Nana's granddaughter.

Alternate Izuku joins the support course at UA and befriends Hatsume. This All Might hero that he met seems especially worried about the switch.

Both Izuku's rooms are full of hero merch. Alternate Izuku is surprise that his counterpart has more merch than him, and that it is almost all a single hero. Main universe Izuku is embarrassed that his new room has as much heroine merch as it does, and glad it's less than his All Might collection back home.

Ragdoll of the awild Wild Pussycats is Izuku's mom.

Izuku grows up in rural Japan. There are more quirkless people in the area and his peers are nicer to Izuku during his childhood, especially since his mom is a hero. Izuku still wants to he a hero just like his mom, and her friends, and All Might. Ragdoll and her teammates weren't convinced Izuku could become a hero without a quirk, but they did help him set up an exercise routine. When Kota moved in with his aunt Izuku started helping him process the death of his parents.

Izuku still meets All Might and still gets One For All, but being in better shape he gets the quirk a little earlier, and with four more heros helping train him, he get a handle on it faster. By the time Izuku takes the UA entrance exam, he can use 8%, which gets him the high score. He later wins the sports festival, and by the time he fights Stain can access 15%. He had a long talk with both his mom and Kota after that fight.

When it comes time for final exams, Izuku fights All Might with Ururaka. Now able to push himself to 20%. Izuku can actually kind of keep up with a suppressed, weakened All Might. At least that was the case until he awakened Black Whip toward the end of the fight.

He was actually just in time to spend most of summer camp training his new quirk. That is until the League of Villains attack and he fights Muscular to save his "cousin" Kota from the villain that his parents died trying to apprehend.

When he gets back to base camp Izuku discovers All for One has kidnapped his mom and is probably going to steal her quirk.

Harry was releived to arrive at the Burrow after helping Headmaster Dumbledore convince Professor Slughorn to return to teaching at Hogwarts because he could finally get some updates on the war against Voldemort. While Molly tried to insist he was to young, Mr Weasley was generally more open with information he felt Harry really should know.

Turns out it was going fairly well all things considered. There had of course been some tragic attacks on muggleborns. Kingsley had arrested a death eater named Yaxley who work in the ministry. Professor Lupin had slain Fenrir Greyback, even if he got a few more scars. Tonks's parents had been attacked by Bellatrix and the Lestranges, and while they were both in St Mongo's with some injuries that they might never fully recover from, they had managed to kill all three of their attackers.

Most sockingly Voldemort personaly went to kill Madam Bones, head of magical law enforcement, however she must have anticipated being attacked and set up somesort of dead man's switch. The protective enhancements on her manor were turned inside out, and the whole place engulfed in fiendfyre. No one had seen Voldemort since, but no one really knew if his second death would stick.

Mr Weasley also told Harry that while the Order was moving out of Grimwald Place. His oldest son Bill, the curse breaker, had found something extremely dangerous, though he wouldn't say what it was, and brought it straight to Dumbledore.

Izuku just never meets Shigaraki.

During the USJ attack he is sent to the mountain zone, and All Might has already chased Shigaraki off by the time Izuku gets back to the plaza. It took Tsuyu and Mineta a liitle longer to escape to boat and All Might saved them from Shigaraki. Izuku was them sick on the day of the mall trip. After the summer camp Momo's parents wouldn't let her out of their sight so, without her extra tracker, the rescue squad was never able to go to Kamino, and some pro heros extracted Bakugou.

By the time of the first war Izuku is interning with Mount Lady instead of Endeavor and is stationed at Mt Gunga instead of Jaku. There he fights Gigantomacia and brings him down significantly faster saving Midnight's life. In Jaku Eraserhead and Gran Torino die before Shigaraki finally retreats. Later when Shigaraki fights Star and Stripes she kills him. Izuku then fights All For One in the second war with Star and Iron Might. Meanwhile Endeavor fights Dabi, Hawks eliminates Toga, and Gang Orca deals with nomu Spinner.