High school manhwa:
https://www.mangago.zone/read-manga/kisses_x_kiss_x_kisses/
https://www.mangago.zone/read-manga/19_days/
https://www.mangago.zone/read-manga/blunder_turned_wonder/
https://www.mangago.zone/read-manga/this_question_is_super_difficult/
High school manga:
https://www.mangago.zone/read-manga/sasaki_to_miyano/
https://www.mangago.zone/read-manga/hirano_to_kagiura/
https://www.mangago.zone/read-manga/koi_ni_mo_naranai/
https://www.mangago.zone/read-manga/prunus_girl/
https://www.mangago.zone/read-manga/yankee_no_kareshi_ga_dekiru_made/
University manhwa:
https://www.mangago.zone/read-manga/there_s_something_wrong_with_my_popularity/
https://www.mangago.zone/read-manga/semantic_error/
https://www.mangago.zone/read-manga/pairing_names/
https://www.mangago.zone/read-manga/peach_and_her_papas/
Enjoy!
SHOUNEN AI's with highschool/university settings? THANKYOU