I don't know how to say this but Mc is an artist that doesn't take good care of themselves but they have a similar idea of beauty like Rook dose where it is everywhere and to enjoy the simple things in life (they are much more awkward and introverted then rook is). I will call them Yuri.
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Mc would be happy with anything they get even if it was given to them in a mean to hurt them. So Mc is someone that people can't hate as what monster would hate such a lovely person. Even tho Yuri isn't afraid to blackmail someone no one's going to believe you as they know Mc has something on them of they never pissed off Mc.
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Ace: How are you so happy all the time?
Mc: Well you just have to be happy if something doesn't bug you, you should love it for the beauty of the item.
Ace: Fuck your like Rook but less creepy.
Mc: Rook isn't that bad he's nice and understand the simple joys in the world.
Rook: Oui Trickster!
Ace: Rook!