Because I am an idiot, I haven't read this since the first chapter. Because I am an idiot I read the rest all in one go.
And now we are suddenly YagaKimi.
Okay jokes aside, what a pleasant surprise. The first chapter was a pretty good hook, but I didn't expect it to really go that in depth with its concepts. How lovely. It may be a silly comparison, but Asahi does remind me of Touko from YagaKimi after all. And Hinako even goes with the whole "I don't understand love" angle. Oh my.
This sort of thing happens all too often for those who are left behind... to cling to anything that can make them go on. But "living for her sake" means you give up on yourself! Asahi has only her sister, but she doesn't feel lonely, because Subaru is all that matters. And as the mirror image, Hinako has everything on the surface, but still feels lonely, because she doesn't like herself. So the one who gave up on herself and the one who can't accept herself are here to mend each other. This is my favorite kind of story~