Buddy, friend, Gotou’s a fucking kid, and a much more realistic depiction of one than what is featured in a majority of these junkfood tier romcoms, and I’d say far more compelling as a result. Yet you’re approaching the character like he’s a garystu MC from an isekai the author is codling as his personal self insert, which he very clearly is not.
No shit he fell head over heels for the first hot piece of ass that gave him the first ride of his life, and no shit is he naively committing himself to a girl who plainly doesn’t deserve a commitment.
Also no shit that his naive teenaged mind is super conflicted when approached by what is by all accounts a better relationship for him, and gives in when Akito presses him even a little bit.
Hell at least give the writer the credit that Gotou didn’t instantly start ravaging her the nanosecond Akito got her tiny tits out.
My point being that it’s a little bit, to be blunt, fucking retarded for you and the other critics of this series to be treating an unusually and refreshingly grounded romantic comedy manga about a horny teenaged fuck up like it’s the biopic of a canonized Christian saint.
You know, I remember being younger. I was never anywhere remotely near as awful as Gotou when I was his age. I had actual values and commitments that I would not throw aside or compromise on. And no, him being committed to Agawa has nothing to do with him banging her, he was in love with her before that was ever on the table. Believe it or not, it is also possible to turn down a girl or to exercise any level of self-control as a teenager to preserve that committment to her. Even if you think she doesn't deserve it, that's something he decided on for himself, knowing full well what he was getting himself into. He's just a piece of shit.
You don't need to be a saint to maintain some personal values. The author could've just, I don't know, written a series that's "grounded" about someone who isn't wholly unlikable, who has some consistent values that actually makes them a halfway decent person whom you'd want good things to happen for. It doesn't take a "garystu MC from an isekai" to remain devoted to the one girl you've committed yourself to and not put your dick in any and all that you can. It's not even like he's hard up for sex.
If you want to talk Gary Stu-esq traits though, this series absolutely has that. Agawa's interest in Gotou makes no sense at all. What makes him any different than any other guy she's banged? He's just magically a special person to her, even after proving that he isn't really devoted to her in any unique way. He is exactly like all the other guys that would cheat on her and bang any hole he can in a heartbeat. He'll act on his whims, disregarding the fact that he knows it's likely to end up hurting someone.
Not to mention Akito's entire existence. How convient that he just happened to have this childhood friend that's been holding a candle for him and only him! That altered her entire appearance to the world just for him. Because she's just so totally madly in love with him because he's, uh... Autistic. Because he gets overwhelmed, stressed out, and angry when facing challenges. Yeah. That's grounded and real. Bitches love autists.
His flaws are irrelevant because they're ultimately either ignored by or further endear him to the girls. He can make any mistake he wants and in the end it'll all work out in his favor. He even resolved the conflict between Agawa and her sister through the magic of his penis! (And gets to faultlessly smash her sister in the process, how fortuitous!)