So I read a few chapters of this several years ago (I think only 3 or 4 chapters were scanned then), but lost it and can't remember the name of it to save my life. Basic story was about a pussy-whipped guy basically being controlled and used as a sex toy by a pair of twins. At one point he's stuck in a locker while another couple has sex in the classroom he's in, gets discovered, and gets some advice from the guy about taking control from the twins. And then it goes on from there. Any idea?

♭38℃ - Loveberry Twins

Yep, that was exactly it, thanks. 😀 I always wondered how that one ended.

Haha, although I got it wrong that he was in the locker himself. XD