u/Senior_Reward_2546

Koshin is a cursed spirit born from humanity's relationship with the forward march of technology; being displaced, replaced, left behind, forced to adapt to it, and watching the world they each knew be destroyed in a way that cannot be reversed.

Its personality is naïve, childlike, and cruel; however, it takes no pleasure in its cruelty. At most, it finds a mild satisfaction in learning from the death and destruction it causes, navigating it all with a cold and uncaring affect. Unlike other disaster curses, it has no concept of right and wrong nor any understanding of human suffering. When it was presented with the concept of curses conquering and replacing humanity, it found that to be exciting and the natural goal of its existence. It was the ultimate expression of change and progress. Despite its seemingly robotic nature, it is still born of humanity and still experiences emotions and connections that grow as it develops and learns.

Cursed Technique - Empire Tomorrow
Its technique manifests as a domain expansion with the appearance of a desolate wasteland. All those inside the domain forcefully have their knowledge and experiences shared with one another in an instant flash. Special grade cursed tools inscribed with all their innate techniques are created and distributed, allowing for the temporary use of one another's unlearnable abilities while those tools are held. These tools are destroyed when the domain ends or when they cross the border of the domain. The knowledge that was shared will be forgotten unless a conscious effort is made to memorize it. Its use of this domain relies on it having a better mentality for it to use and abuse the shared information and techniques.

photo by @dikaseva

How it feels of others:
Towards Dagon (cursed womb), it feels a sense of curiosity. It appreciates getting to see the process of a similar being making those basic connections it had to make at some point. He is an interesting case study that should be made to develop.

Towards Hanami, there is a sense of estrangement. They essentially represent completely opposite concepts. Koshin is a manifestation of the imbalance humanity creates that disturbs nature. It does not feel wronged by any resentment or disgust she holds.

Towards Jogo, it feels a sense of respect. It enjoys his revolutionary philosophy of progress. His association with the earth and fire also has feelings of familiarity with its own nature.

Towards Mahito, it feels an affinity, sharing his experimental nature and desire to learn and grow as well as a more direct connection to humanity than the other disasters who are rooted in nature and the world. It also wants to pull humans apart and take whatever can be taken from their existence.

Towards Kenjaku, it feels intense fascination. If only it could have what lay inside his mind, all of the progress, invention, and knowledge he has amassed, all of his designs. There is perhaps no greater a repository of everything it values than that human.

Extra notes (may add more):
Its name is a pun on koshin (更新), meaning update or innovation. While its name roughly evokes connotations of (continued/further/renewed) + (invasion/violation/encroachment).

The art used for the thumbnail/cover is an edit of one of the monsters from the game SOMA.

Edit 1: The name Empire Tomorrow is a continuation of the themes set up by the curse's name. Technology is an empire that conquers and incorporates everything it touches.
This is why knowledge and techniques within the domain are shared among everyone. It is as if the process of study and innovation has already happened. You're added to the metaphorical empire.

Tyranny is a domain-based technique that locks the user and its targets into a series of votes. The rules of the technique are provided to all participants in a dossier for them to read. All violence is forbidden. The rules are as follows:

1. Exit - To resolve the domain and allow those inside it to leave there must be a unanimous agreement to do so by all participants (any sapient entity within the domain is considered a participant). No formal vote needs to be held to initiate the exit and end the technique so long as all participants are in agreement. However, there are two exceptions. If for any reason there are fewer than (3) living participants, the domain automatically ends. If no participants have the ability to speak, the domain automatically ends.
2. Nomination - Before a formal vote may be held, a speaker must be nominated. The first participant to declare "I nominate..." followed by the name of a participant will begin the process of electing their chosen nominee. If there is a simple majority, the vote passes and the chosen participant is now the speaker. If they do not receive a simple majority of votes, then this step must be repeated. No participant may be nominated twice in a row.
3. Offering - The speaker now states a punishment that they wish to be inflicted in the next vote. The punishment must be one of the following: (A) death, (B) a specific physical injury, (C) sealing of all cursed techniques preventing their use for a specific period of time, (D) sealing of cursed energy use for a specific period of time, (E) imprisonment - limiting the target to a specific location they are unable to leave for a specific period of time, (F) seizure of all items within their possession; those items are granted at random to any participant who was not punished. After the speaker states their chosen punishment, another vote is held; if this vote passes with a simple majority then the participants will proceed on to following rule 4 to determine the outcome of the selected punishment. If the vote does not pass, the speaker loses their position and a new one must be nominated to continue.
4. Tyranny - Once a punishment is selected, all participants must enter into the private booth provided for this step and make a selection. They are offered a black marble and a white marble. Only one of these may be placed into the ballot box by each participant. Once all participants have made their selection, the result is revealed. All participants who voted for the most common option have the agreed upon punishment inflicted on them while all of those in the minority are safe. After the punishment is dealt out, the cycle repeats and a new speaker must be nominated to continue.
5. Non-compliance - Once a vote for nomination, offering, or tyranny has begun, all participants are given a period of ten minutes to make their selection. Failure to do so is considered non-compliance and increasingly harsh punishments are granted onto offenders. The first infraction is punished with the loss of a limb, the second infraction is punished with blinding the participant, the third infraction is punished with death. Any attempt to actively prevent a participant from voting will bring this punishment of non-compliance onto the one attempting to do so.

(Note on use: If the user packs the domain with their friends, it's very easy to game the system and coordinate votes. The downside of doing so is that every time you get to the Tyranny step, half of your allies are going to also get punished just to assure it hits your enemy. It's still unfair but the name is up-front about that.)

(Note 2: The absolute most amazing outcome this technique can produce would be something like the user bringing in multiple enemies while facing them alone and somehow tricking them to vote into the majority for the Tyranny phase resulting in everyone except the user getting punished.)

(Note 3: The Imprisonment punishment goes into effect once the domain ends. If you said “Imprisonment in Tokyo for 3 days” and you were outside that area, the punished people will just get warped away to that place. You can get hyper-specific and say a specific room in a specific building if you really wanted. “Imprisonment in the McDonalds PlayPlace (tm) closest to our current location for one year” You can’t get conflicting imprisonments and the domain defaults to whatever the first one was.)

The Epicure technique functions in a similar way to Suguru Geto's Cursed Spirit Manipulation. The user must subjugate a target by dealing a killing blow to them that is imbued with the technique. This will transform the target into an Ingredient. The resulting ingredient will vary wildly depending on the exact nature of the slaughtered target but certain targets have almost guaranteed results:

Ingredients
Grade 4 Curses: Salt Water. These weak curses always result in salt water which must be boiled to extract the water and salt to then be used in further cooking rituals.
Grade 3 Curses: Spices and seasonings other than salt Very similar to the salt and water, used in further rituals, requires less processing to extract useful materials.
Grade 2 & 1 Curses: These result in your first set of truly useful ingredients in the form of vegetables, fruits, mushrooms, and extracts such as milk or honey.
Special Grade Curses: These could be almost anything. All of the above listed sorts of items as well as possibly meat or more exotic items used in cooking. This is truly unpredictable.
Humans: You always get some kind of meat, offal, or blood from the ritualistic slaughtering of humans with the epicure technique if you get anything at all.

However, ingredients on their own are completely useless, to gain any benefit from them, they must be cooked into full meals. Contaminating ingredients created by Epicure with any outside matter renders them inert. The user must even wash their own hands in only water created by their technique. Pairing any created meal with a drink that wasn't created using the technique also nullifies any benefits. If the one consuming the meal does not savor and enjoy it, the effects are almost entirely nullified. You have to actually take your time to sit down and take pleasure in the act of eating.

So... What Actually Happens When You Finally Eat?
After all the work of collecting ingredients and then preparing them into dishes, the effects depend on the precise nature of the spirits/souls being consumed, Special Grade meals in particular can result in unique effects. There is a general rule to this though.

Eating once results in temporary empowerment to the one consuming the meal
but
if meals created by Epicure make up your entire diet, you will begin to see long term benefits proportional to the quality of the ingredients, a slow steady increase to your actual strength/power

Clown is an inherited cursed technique themed around the art of clowning. The user acquires new aspects of this art form as parts of the technique by partaking in rituals discovered by previous users of the technique. At its core, Clown is about gaining awareness and mastery over the shape of your soul. The greatest weakness of Clown is its “internal” nature; it is wholly concerned with the body and limits the user’s ability to perform other techniques that affect the world around them such as the use of barriers, shikigami, and cursed tool use. A user of Clown who has been caught inside a domain expansion is essentially helpless and their only hope is to survive the enemy's sure-hit effects.

Empty Aspect - Foolishness
Before any aspect is developed, the main application of the technique is the Empty Aspect that all users of Clown intrinsically have. By forming a hand sign and channeling cursed energy, the user enters into a state of mind called 'Foolishness' where they lose touch with reality, gaining a uniquely dissociated perspective that nullifies fear, pain, anxiety, and anger.

Aspect of Façade
The aspect of Façade grants the user the ability to cause subtle changes in the surface of their soul resulting in superficial alterations to their appearance and how their aura is perceived by others. This is generally used to disguise, obscure, or decorate oneself. 
(RITUAL OF ACQUISITION: To acquire this aspect, the user must make themselves deeply aware of the appearance and shape of their soul and then ritualistically apply paint to their face that perfectly matches this. When done correctly, the paint should vanish into the skin)  

Aspect of Contortion 
The aspect of Contortion grants the user the ability to more freely move their body, ignoring the limits of their joints, allowing bones to bend without breaking, flesh to compress, tendons to stretch. 
(RITUAL OF ACQUISITION: To acquire this aspect, the user must break these limits on their own, fitting themselves inside a sufficiently small vessel such as an urn. When done correctly, the user should slowly feel more comfortable despite any injuries sustained in the process and then become able to climb out of it.)   

Aspect of Tumbling
The aspect of Tumbling grants the user the ability to apply force to their body allowing for greatly increased mobility and acrobatics, allowing them to change their direction of movement without pushing off of any surface or the air around them.
(RITUAL OF ACQUISITION: To acquire this aspect, the user sits in meditation after imbibing a powerful paralytic toxin. They will slowly lose the ability to move their body, open their eyes, and eventually lose the ability to breathe. Before the paralytic subsides, the user must become able to stand up and then remain standing by manipulating cursed energy inside their body.) 

Aspect of Slapstick
The aspect of Slapstick grants the user greatly enhanced defensive capabilities that lets them passively deflect incoming blows by allowing them to land uncontested and then slipping around, bouncing off, or folding under their force like a leaf in the wind.
(RITUAL OF ACQUISITION: To acquire this aspect, the user must fall a distance of at least 100 times their height without ever slowing their descent and then land on a stone surface without using reinforcement.)