I'm glad she stay alive till end. Bullying is bad, especially in Japan.
Her own condition is kinda dangerous, I've lost one of my nephew which had same condition as her.
This is not a laughing matter anymore, I'm really feeling bad for the MC.
He tried his best to change himself for girl he loved. But in the end, the real protagonist take all of it.
I dunno about the ending, but hopefully it'll be better for him.
The story is good. But I found lack of actual conflict between the Heroine and the Villainess is kinda....
Don't get me wrong, I quite enjoy reading this till the end. However, without any conflict this will end up like any other shoujo ai manga out there.
TLDR: 7/10, Good if you want some cute...