What do you mean by "shoujo twist"? Kasane is seinen, and it reads like one to me.
I suppose I used the word "shoujo" because it feels that 90% of the "seinen" manga I've been seeing translated lately is just ecchi/harem/crap. You're right though, it's not shoujo. I meant more of the school yard bullying, self image issues, etc. if that makes sense.
I'm also super excited with these responses, I've actually not read a majority of them! Thank you everyone!