Page 12, pretty sure you mean 'ballet' not 'ballad.' Not sure how standing around and singing could cause that much irritation, especially when it's followed up talking about jumping, running, and hopping.
Man I have caught up with the manga and I just wanna say my take . Main love interest is annoying and mc should just move on to Mai or even class rep (if she ever comes out clean with her feelings
@Mitcha mc confessed 2-3 times now and she still has not given him a straight answer. She acts like its his fault for all the lewd situation they get in. She even acts upset because he encourged her to move in with her sister. Also she gets gelous when he interacts with Mai but when he try and do something nice for her she backs down because "its not fair for the other 2" .
@StarixCrown She is just playing hard to get, which is typical for all tsundere out there. And you seems to ignore those moments when she melt down a bit and let the MC gropes her? Hayamin likes the dude, it just takes some work for her to admit it.
Or you can just go with those easy sluts that seems to fall for the MC for no reason.