Honestly this isn't the kind of ending I expected for a manga of this name and now I feel guilty because I wanted a story with way more comedy, drama and negativity instead of this redemption arc, like maybe a bad ending for Kurosawa.
But I think that development deserves praise for being so unexpected yet so enchanting, like if you put a hundred other people to write a story with this premise I don't think even one would make an ending like this.
Although I felt like Kitahara got left in the dust a bit there even though she's the second mc. Seeing more comedic moments with her and even showing more of her own redemption arc rather than just opening a door would have left more of a satisfying ending in my opinion.
Or just getting to know more of the secondary characters in general instead of just showing how they relate to Kurosawa.
Also on another note, I can sort of see why things didn't turn more comedic or dramatic as I expected.
Kitahara and Kurosawa's relationship was going nowhere, in another story you would maybe see them getting together and helping each other in ways they didn't expect but at the end of the day they were bad for each other.
Their revenge plot and misdeeds were just plain pettiness at best and nothing would have changed, Kurosawa would still be a resentful asshole and Kitahara would just keep getting bullied.
But talking about that it makes me think that maybe things were just too convenient for that redemption arc. If a person did what Kurosawa did in real life they would just get expelled, get put on the sex offender registry and have their life ruined. Specially someone shown to be a loner like Kurosawa.
So it seems unrealistic that people would just forget what this gooner did to them, specially his first victim that somehow ended up with him.
Still, I think Kitahara's arc is unsatisfying since she only stopped getting bullied after causing a scene and becoming a shut-in, only being able to come out of her shell thanks to a redeemed Kurosawa.
Kind of sad, honestly.