>>2632119>You mean Kaguya-sama?Hit the nail on the head, exactly the series I was thinking of. The author went full progressive (in the political sense) with plot later in the manga too.
Everything from slut acceptance stuff, to including "twitter memes".
It's like if crunchy roll and reddit made an anime.
Anyway's, straying slightly from OP's rule's.
Here's "Totally not Onsa from Bakuon" in an H-manga by Orimoto Mimana (creator of Bakuon) in which "totally not Onsa" grows a penis. I don't like futa, but this is hilarious if you've watched and/or read Bakuon.
https://exhentai.org/g/875197/0a201219dc/Orimoto's done some other "totally not said character from Bakuon" stuff. Mostly futa stuff, but it's pretty funny.