I tried not to add any that are on your list
these are mostly green flag imo
https://www.mangago.me/read-manga/all_about_lust/
https://www.mangago.me/read-manga/leave_room_for_me/
https://www.mangago.me/read-manga/omega_complex_1/
https://www.mangago.me/read-manga/grieving_you/
i have other college life i wouldnt consider green flag though lol
I’m too lazy to type so I’ll only give you a lil info about certain manhwas
https://www.mangago.me/read-manga/symbiotic_relationship_between_the_sun_and_the_moon/
https://www.mangago.me/read-manga/the_fundamental_law/ Okay this one isn’t TECHNICALLY a bl and it takes place in highschool BUT ts is so good I can’t resist recommending it to you.
https://www.mangago.me/read-manga/biscuit_1/
https://www.mangago.me/read-manga/wild_beast_warning/ They’re in highschool tho. I really like this story because bc the Mc and Ml become friends and THEN slowly catch feelings
https://www.mangago.me/read-manga/the_secretive_xx/ Short story
https://www.mangago.me/read-manga/nerd_project/
https://www.mangago.me/read-manga/blue_name_pressure/ I don’t think the college part plays a big role, but maybe I’m wrong
https://www.mangago.me/read-manga/unrequited_love_rendezvous/
https://www.mangago.me/read-manga/one_room_ta/ PEAK NO QUESTION
https://www.mangago.me/read-manga/unsleep/

College life BL manhwas that are green flag or at least mostly green flag. I also accept redemption arcs e.g. Bj Alex. Here is my list
https://www.mangago.me/home/mangalist/3714870/?filter=&page=1