During a group project, U-yun is grabbed by the collar simply for asking an uncooperative teammate to contribute his share. Pinned against the wall, he is repeatedly shoved. In this highly stressful situation, a thought suddenly crosses his mind: "Wait a minute... aren't our torsos rubbing against each other way too hard right now?"

Excited about his first adult relationship, U-yun tries to share an intimate kiss. However, Jin-hyeong wants him to wait, as he has a specific idea regarding physical intimacy.