Saiaku no Jinsei
Complete | Fuji Tobi | 2000 released
1-2) Student x Student. Didn't really like this one. 3 & onwards) Student x Student, time skip > Worker x Freeloader. This was an OK read.
Mousouka, Koi o Suru.
Complete | Ayumi Saki | 2013 released
1-2 & 5.5 - 3 - 4 - 5 Only the 1st story was okay imo, cute and fluffy. Student x student, one of them is a fudanshi
I'm Mediocre but I'm Loved in a Different World
Complete | Kouta,Izumi Rinne,Sakurako,Yamano Deko,Mitsuki Mirai,noranekotosuteinu,Tonomaru,Kuroi Hiyoko,TOYAMA Chigusa,Matsumoto Mikan,Orishima Yupopo,Isaka Jugoro,Yoshinoda Yuu,Inaru,Yumoto Miko | 2021 released
Each chapter is a short one-shot with their own universe and characters, and they're all in one way or the other problematic if you really care (except chapter 3-- it doesn't have any applicable warnings).
Hitorijime no Jouken