Remember chapter 35 when they said that "youth is associated with lemons" and MC said that lemons doesn't fit him,
well now my boy is using citrus scent
I think kubo is also not aware of her sentiments towards shiraishi, because of that chapter where she was with her girl friends and they talked about love and she didn't realize her love for him (or she was playing dumb) so she's fine with being friends with him
she feels happy around him and...
I'm getting Ami from ToraDora vibes from Toradora! with that new girl (Asami)
They share a lot of similarities (like keeping a facade and both characters where dislilked when they got introduced)