There was this one bl manhwa I read a few years ago where the mc sorta gets drunk and f's the ml. The ml had a sister who the MC's friend thought was a guy and really likes but mc thought that his friend liked the ml. The two of them also have this weird classmate who wears glasses and always seems to know what's going on despite not being told anything and he ends up f-ing the MC's friend when they catch the mc and ml doing it in a lecture hall I think
There was this one bl manhwa I read a few years ago where the mc sorta gets drunk and f's the ml. The ml had a sister who the MC's friend thought was a guy and really likes but mc thought that his friend liked the ml. The two of them also have this weird classmate who wears glasses and always seems to know what's going on despite not being told anything and he ends up f-ing the MC's friend when they catch the mc and ml doing it in a lecture hall I think