Ok, so, to save everyone some time.
No, this isn't a revenge story, this is actually plain stupid.
This thing isn't worth your time if you want the girls to suffer, if anything, this thing exists solely so you can appreciate bad romcom mangas.
Like, for example, do you hate it when girl's motivations or backgrounds are too plain, too obnoxious, too simple, that?
Well, here we have 5 (or more) girls who have a myriad of issues.
-His Mother
-His Sister
-His Elementary-School Teacher
-His Childhood friend
-His Club Supervisor
Guess what? Every. Single. One. has done something bad to him, tried to kill him, ruined his school life, ruined his self-steem, broke his heart, etc.
And now, the girls who broke his heart are the same ones trying to fix him, which they don't have the right to, only girl who actually didn't fuck him up that badly was his childhood friend because she didn't outright ruin his school life or hurt him psysically, but then again, they're all bad choices.
And you know, when they introduced you to the Senpai, who not only has a normal background and has a normal relationship with him but also isn't fucked up in the head, because of how the manga goes... you know she's not even close to be the winner, the writer... I have no idea how they sells this crap.
Don't bother, contrary to Nyanta and Pomeko (that was axed) the girls who ruined my guy are still getting in the way.