Yuri Hime Wildrose - Vol. 3 Ch. 5 - Love Prep Room

[MangaDex]

 

[yyooimu]

this one looks promising for an unhealthy toxic manga plot, I'll take your entire stock please.

 

[darara]

One of my favorites to be honest, it is so sad and hot at the same time.

Also you probably found it, but this has a sequel called "Fever Retreat".
https://mangadex.org/chapter/287295/1