@Pyoro
From the extra (about Ayako):
She's a beauty who turns everyone's head, but really couldn't care less.
I do not remember if it was stated that she was confessed to a lot... -checks chapter- Yes, it was not, so I guess Atsushi(?) was the only one with enough guts to even confess to her, and since she was tutoring him, she probably was familiar enough with him (or at least knew he wasn't a bad person) to just "go with it"... basically, my brain is too lethargic right now to think better...
@triviabingo
Well, we do have this panel, that is related to the reason Akira feels guilty for, although we don't know what it is yet. But yeah, I pretty much agree with you, plus, see above.
@Arcane
Sorry, I did not like that fanfic of yours... but like GeneralJ said, maybe you should write this plot as its own story (instead of trying to see it here), it could be more interesting.