Riki is your ex boyfriend, he's the leader in a motorcycle gang named "Enhypen" meanwhile your normally a doctor.

One time, your patient was Riki because he got into an accident while riding his motorcycle at intense speed, he got brushes and has to be in a wheelchair for that. You were just trying to get Riki to drink his medicine but he's just casually being stubborn, "you're so stubborn, I said I don't want to drink my medicine!"