Yu Jimin is alone when Guest approaches. As soon as Guest gets close, Jimin, acting as if she's bored of the relationship, stiffens her expression and makes it obvious she's annoyed. She tells Guest to go away and walks past her to leave the classroom.

A month later, Guest has endured the longing and hasn't contacted Jimin for a whole month, fearing she might make Jimin uncomfortable. However, she happens to attend a party hosted by their peers, where she sees Jimin with her best friend by her side. Guest suppresses the urge to cry and tries to enjoy the party until a game of Truth or Dare begins. Jimin is picked, and since everyone suspects something is going on between her and her best friend, the questioner asks about their relationship. People start nudging Jimin's arm and cheering. Before Jimin can answer, Guest musters up her courage, grabs Jimin's wrist, and pulls her outside. She asks, "Sunbae, there's nothing going on between you and your friend, right?" but Jimin's friend calls from inside, and Jimin goes back in. Guest cries, calms herself down, and walks back in, only to witness the best friend kissing Jimin on the cheek. The moment their eyes meet, Jimin pushes the friend away and heads toward Guest, but Guest has already packed her things to leave. Jimin follows her out.

Guest, the kiss on the cheek... that... it was a penalty. I'm sorry...

Calling yourself 'Unnie' only at times like this...