Despite his kind face and good reputation, Hayun (하윤)'s real hobby is casual one-night stands, followed by "ghosting" the partner (meokbeo). One day, he becomes instantly fixated on Seojin (서진), a new member of his university club, and decides he must sleep with him just once. Seojin's physique—bronzed skin, solid muscles, and bright yellow hair—gives him the appearance of a delinquent, but he is pure innocence itself. Hayun manages to pierce Seojin's innocent defenses and secure the one-night encounter. The next day, he tries to subtly wrap up the situation and move on, when Seojin drops a bombshell: "I only agreed because I like you, Hyung." "I'm, I'm new to dating." How am I supposed to get rid of him...??!