My idea on a more "lighthearted" version of Nightcord at 25:00.
Basically, I'm using N25 members to create a more lighthearted version of the said unit in a way that their songs are still usually dark, but members themselves are not (at least when compared to their original versions). Kind of like Roselia from BanG Dream!, if you will (if that's the right comparison).
"Music runs in the House of Yoisaki."
"Ever since the history of Japan was written, my family always had immense talent in music and they would be able to perform variety of music depending on their personalities."
"And so do I."
Kanade Yoisaki - She's still reserved and quiet, but definitely much happier than the original version (kind of like a cross between her original personality and World Link 2 personality). At the beginning of the story, she graduated (from) a music college with top marks at the age of mere 16 and is trying to find her own music. Obviously, both of her mom and dad are alive and well and are very supportive of her with her dad being a renowned film and TV series score composer. Her only pain is the fact that her grandfather on her mother's side, who was also a renowned musician, passed away at the age of 76 due to an unspecified illness a year before graduation. While her musical talent is unparalleled (at least among main characters), she's kind of stupid when it comes to other aspects as she entered the college at the very young age. Her home is a large Japanese-style mansion and her room looks like a Japanese version (if that's the right way to describe it) of the original version of her room.
Ena Shinonome - A family friend of Kanade. In fact, Yoisaki household and Shinonome household are pretty close to each other and Ena is essentially the reason why Kanade didn't feel alone when she was in college as they spent so much time with each other. She's very interested in yamikawaii fashion and while her dad is kind of strict, he's in good terms with his children. Her relationship with Akito is mostly the same as the original.
Mizuki Akiyama - Aside from few details (like having no identity issue), Mizuki is pretty much the same from the original. While her grades are consistently solid, some don't exactly like her because she's an infamous troll and keeps on ditching classes because she can't be bothered.
Mafuyu Asahina - She probably has the biggest personality difference from the original version among 4 members. Her "outside self" is mostly the same as the original, but her "true self" is a lot more comical as she likes really dark, bleak, and depressing media (in fact, she spends most of her free time enjoying those stuffs and her room is filled with posters and collections of such things including a poster of a film that clearly reeks of Terrifier) and on top of that, she has such a blatant "middle school syndrome". Her parents are okay with Mafuyu being like that, but they do have ONE concern - outside the school, she's LAZY! In fact, her parents always tell her that she should start thinking about her future, but she's too lazy to find one. Kind of like a "darker" version of Umaru Doma.
SEKAI - Their SEKAI is Gothic Mansion SEKAI originated from Kanade's heart. VS variants in this SEKAI look pretty similar to VS variants of Empty SEKAI from the original except Miku's hair is clearly teal (and their clothes are in better shape) and their personality, while still calm, is much closer to original VS members, though KAITO is still a bit strict. Main VS members are Miku, Rin, and Len.
In the end, they manage to form their own unit and when Kanade says that her friends are going to work on a lot of "dark music", her family are okay with this and even give the said unit their blessings - and Mafuyu's parents even thank Kanade for helping their daughter to finally have a vision for her future.
Kanade: "We're going to be a fully independent music quartet and this will not be an easy path. Our music will be dark and thoughtful music about the meaning of life and death along with other subjects as well, but with a sense of hope included in ways that they can heal inner wounds of people who listen to our music - and yes, Mafuyu, we WILL work on some very bleak music too from time to time, so don't you worry. So without further ado, are you ready to give it all... for Nocturnal Nightingales? 😎😎😎😎😎"
Ena, Mizuki, and Mafuyu: "We're ready as you are! 🤩🤩🤩🤩🤩"
Yeah, sorry for a massive rambling, but I just wanted to get my idea out on what if N25 members had more "lighthearted" backgrounds and personalities. 😅😅😅😅😅