Responses
Tbh I also didn't feel the chemistry from Ryou beyond brotherly love. I would love some realism but it's a rare thing in bl mangas. Most of bl manga main plot is romance which means guaranteed happy ending for at least the two main characters. So chances are Ryou would return Hayato's feelings and they all live happily ever after.

people are gonna hate me for this comment, but I really hope Ame and Hayato don't get together. I can't get into it at all, I can't see any chemistry and I don't feel like it would work very well. -_- And maybe we'd get some realism that way, that for once the clueless straight guy actually doesn't suddenly turn gay.
on a sidenote, if they do get together, I hope Hayato will be the uke because he's so precious and wahhh <3 and sometimes I love a shorter seme