https://www.mangago.me/read-manga/just_when_i_thought_i_came_here_to_die/
I don't think this is the one you're looking for cause it's not set in a university and they never banged, but imma leave it here just in case :)
It isn't set in a university by everything else fits I think
https://www.mangago.me/read-manga/kamengoshi_ni_kiss/
Actually, it might be this one?
https://www.mangago.me/read-manga/koi_wa_kamen_no_uchigawa_ni/
I'm honestly just throwing stuff out here so...
it isn't, but i really loved it lmaooo
and i thank you for that. sadly it's none of those :( though they also look interesting
Thank you for taking them into interest. If you find the one your looking for please let me know!!
lmao i will
or like a cardboard box or something else ridiculous that completely hid his head and maybe some of his body. i think it was a manga set in a university, and that the love interest was never shown without his disguise and never spoke. (they still banged though). i think it might have been a one shot. anyone know the title?