I don't understand why some people hate Isono aniki. He didn't use Asahi in any way. He said it in the beginning that he accepts and appreciates Asahi's feelings and have been honest about liking a girl. His role has been very important to the main characters. He was understanding, supportive and held no prejudice. I like him.
P.S
Yuu is such a handsome boy.
I guess because you COULD interpret it as he loves Yuu and values Asahi and doesn't want to hurt them, but he wants what he wants regardless of it whether it hurts them and still wants them to love him/be his friend.
I think there's enough nice and genuine stuff about him, though, to balance that out. For me, it was more like he just accepted it was an imperfect situation (with his friend liking him and his brother liking his fiancee) where people were gonna get hurt and did his best, and luckily for him it turned out alright.











Well, no matter how shitty Yoshida is, this is yaoi. So of course, Kitagawa will fall in love with him.