@Kurose YES HE WAS JUST LEAVING FROM SEEING DH!!!! Also maybe its because I know what happened to Do Hyeok but i was under the impression that Siwoo knew DH was raped. But then again DH is too proud to say he was raped so maybe during that scene when he said he "f*cking hated it" he was referring to the piercing? IDK. But yes, Siwoo was protecting Do Hyeok from the drug friend rapist guy.
