From what i understood is.
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It seems that the older brother was aware about everything...its like he knew it would end up with them together in the end...he was the manipulative one
No actually,
He didn't knew that Akio had an obsession with him till he got rapped, when he leaves and the came back were when he bream up his mind and started to became the slut his brother always wanted him to be.
Practically, he ends up just like his younger brother always wanted to.
No but he explains at the end that he knew Akio liked him all along and was just waiting for the day Akio gave up and finally raped him.
Actually, here he says "from NOW ON I'm gonna make it so he looks only at me"
And before that, he also says that is Akio's wrongdoing
http://www.mangago.zone/read-manga/deichuu_no_hasu/mi/de1f1c18992e38c4e3f665ffb324465b_chapter-6/6/
But before that he also says word for word “I’ve known all along, that Akio liked me the whole time” then he says “when he pushed me down, I just thought the day had finally come”. Meaning that he knew Akio liked him and knew what Akio was trying to do. He also knew that Akio would try to rape and because he says “the day finally come” showing he’d been expecting it to happen. The “from now on” just shows that he’s going to actively try to make Akio his instead of being passive and doing it subtly. As in he was aware that his actions were effecting Akio but kept doing them anyway, and now that the thing he was waiting for finally happened (Akio raping him) he can finally aggressively/actively pursue Akio.
this makes the most perfect sense!
can someone explain to me the twist? about the older brother. like, so he actually likes his younger bro from the very start? explain please. cause english is not my 1st language, so i have hard time to understand