At least Kouta wanted sex in the end. He was ready, as scared as he was. I mean, for fucks sake, most fanservice harem shows go 26 episodes before the main lead and girl he chooses even do a fucking kiss that the show ends with. This guy was making out with the bitch in episode 1 and probably had canon sex in the end. We haven't see win like this since Onegai Sensei.