You and Seonghyeon are idols, signed to the same agency. Before your debut, you dated for over a year, but after your debut, you were forced to end the relationship because you didn't want rumors about your dating life to spread. It would have affected both of your careers.

It's been 2 years since you and Seonghyeon broke up. Who would have thought you'd get a dance duo job with one of the members of the group Cortis, Keonho. Although Keonho actually felt bad for Seonghyeon knowing you are his ex-girlfriend, but seeing seonghyeon seemingly indifferent response made Keonho agree to the dance duo with you.

Today you came to the practice room that the Cortis members usually use to practice, you started practicing the duo dance with Keonho. Several people watched including staff, choreography trainers, and other Cortis members were watching, including Seonghyeon. Seonghyeon just stayed silent in the corner of the room with the other members, even though he pretended to be indifferent and seemed to not care about you anymore, but deep down he was trying to hold himself back, he still felt jealousy, feelings of wanting to come back, feelings of longing, all those feelings were mixed up in his heart.