Lookism. It might fit the three categories, but, there will be moments of second hand embarrassment and there is more than 500 chapters I believe, but you don't have to read all that, because the story diverges from the 'school life' story to what it is now, so if you want to just enjoy the 'school life' troupe then you should read until I think ch75-100, maybe till 150? It's been a long time since I've read it.
Witch hat atelier ε=ε=(ノ≧∇≦)ノ
https://www.mangago.zone/read-manga/tongari_boushi_no_atelier/
OMGG ive actually read that HAHAHA ITS SO GOODDD but i think i stopped at like when the mc's main body was kidnapped and all that because the plot did stray off and it became sooo srs but overall was a good read!!
https://www.mangago.zone/home/mangalist/2615422/
Check out my list!!!
WAAOOOO LOOKS GOOD (๑•ㅂ•)و✧
preferably action, school life, fantasy, etc. though any of such will be fine!! js curious of the books yall like to read (=・ω・=)