Responses

They had sex, it's possible for him to keep his boxers on and have sex.

My thoughts exactly.
Either they were *pardon my language* dry humping becus briefs on and all... or koogi added the brief for censorship issues. Becus from the way they were talking during their smut time, it really sounded like they had sex. It would be weird for sangwhoo to just grab his boxers on in the middle of sex.
i hav a Q
sooo... did that girl and sang woo actually had s*x?
he was wearing his boxers wen she first tried to run away...
well... he could go though the gap of his brief/boxer...