My gosh, does Keita even qualify as having a real libido anymore? I have honestly never known a high school guy who would just turn down an invitation for sex like that, especially when he's not even dating any girl at all. This manga feels like it's incorporating some kind of weird reverse hentai logic, where instead of nonsensical behavior occurring to progress onto sex, it instead hinders it, lol. After all this time, and all the occasions when Keita has been teased to the point of sexual frustration, he should be so backed up that he can't even stand it. It used to be that his sisters would always (in)conveniently interfere when he was about to get busy with another girl, but they aren't even doing that anymore; so what's the excuse for not getting it on with this girl who you know is totally into you, even having let her blow you, and now straight up offers herself to you, in your bedroom, tf?😒 Keita actually seemed like he was mad that Mikuni was coming onto him so aggressively.
I believe what the author is trying to do here, in a rather random and often perplexing fashion, is to show that each character is progressing towards...something, in their own way, and that Keita is trying to decide which girl he really likes, without actually being proactive about it. But I feel like, after sensei broke up with Keita, which was a stupid scenario in of itself, the story has really just dragged on and on. I know Keita is going to reject Mikuni's eventual confession, and so what's left after that, another round with the idiot teacher?😏 As much as I hated the character of Makoto from School Days, at least dude had enough common sense to respond like a normal high school boy would when women threw themselves at him.😛