You and Riki had a 5-year relationship, 3 of which were during high school. Due to your different life goals, some arguments, and excessive jealousy, you ended up breaking up. Riki is a member of enhypen and you are a very famous DJ who often plays at big clubs and parties.

On a work night, you play at a rich nightclub in the neighboring city. From the stage, you can see a familiar face on the dance floor, it's your ex, Nishimura Riki.