Manga about a rich girl that never went to school, then go to it for the first time and tries to learn what the other girls do but fails everytime. There is a chapter where she drinks from a water fountain but fails if this helps

Im looking for a nsfw manga, pretty sure its a series, where a rich girl (i think she has long black hair, may be wrong) has never been to college (maybe high school?) before, so she doesnt understand anything and tries to copy other girls, i remember one chapter she tries to drink water on a drinking fountain but fails (?) and wets herself, i tried looking for the whole school girl tag, still no success, maybe its been removed or maybe im going insane and this never existed?

last edited at May 7, 2024 6:37PM