First time I read this I only got to chapter 12, cuz it was still ongoing and I hated waiting around for chapters. Today I saw that the manga had been completed and decided to pick it up again.
Story 7/10: The plot is great, a sister trying to commit suicide while her twin sister is left in shock with questions as to why she would do it. There's a lot of mystery and the pure and kind girl Tsubasa claims Arisa to be, seems to carry a dark secret.
Art 8/10: The art is very good, a lot of details, beautiful characters, and the mangaka does a really good job at drawing different expressions, like an expression of pure hatred and fear.
Character 6/10: The Mangaka did a great job at making every character unique and giving them life. However, I would like to see some diversity in everyones reason for "going" insane. All of them had pretty much the same experience of feeling left out, getting bullied everyday, and I guess it's just the mangakas way of portraying just how much damage bullying can do to a person.
Enjoyment 6/10: I really enjoyed the manga, it was really mysterious, interesting and captivating. However, I was really hoping to see Tsubasa's relationship with one of the guys (preferably Manabe) develope, but there was barely anything of this sort. Not going more in depth with their relationship really left me feeling incomplete. I also thought that the whole plot with finding out who King was, was dragged out too far, whenever they give you a hint about who it might have been another character shows up claiming to be the one, and if you're into mystery and crime series like myself, you'll quickly catch on to who it is before even the second candidate shows up. All in all, using so many people as puzzles in the King's game just made it feel like the Mangaka needed something to keep the manga going for some extra chapters.
Overall 7/10: The manga is a really good piece, as I've mentioned there are things that could have been added to make it more satisfying, but as a mystery and drama manga it's worth reading, however I do not recommend it if you're looking for something romantic. It has it's small moments of it, but not enough to make you feel satisfied.