
I don't hate A and Yu story either , like many think that it's incest but it's not . Yu know A is not his brother at a young age , and A came to knew that too , yu left A when he was young too and came back after being all grown up . They are both not blood related either. Yeah if they were raised as brother without knowing the truth till their 20's and above, it might have felt a bit weird but that's not what happened right. Many are mostly hating this because this is a shounen ai , if this was yaoi with the same couple I am sure the point of view was very different.