where ntr??? give the mc some psychosocial trauma that'll make him fap while watching the losing heroine moan like a animal while getting pounded by a 20 cm cock behind the door
So... were people confused when they first read this? The MC's name isn't Manabu-kun, they're just talking about him years later... Granted, it doesn't seem like Manabu actually got with the loser chick so it might not be NTR. Still, close enough.
In this situation doesn't "NTR the loser heroine" mean having sex with her crush while she watches? So if the title was honest then this should be a BL manga.