Webtoons

Young stalker boy wants to take back a killer vampire home to be his wifey!

Juvenile student passed a note to his friend declaring for a fight. It is accidentally mixed up with a girl's love letter. So now his enemy think's he's gay

Protagonist is a 20 year old college student who has no interest in his love life, since he is about to enlist in military, friends always put him on dates. While working in his part time job a customer drops his phone, so he returns it but then the guy starts crying over something.

Perfect child with upbringing of always meeting people's expectations. Once you do a bad thing, you don't go back? Then one day he gets caught.