Song, a broke student with cavities, meets Jay, a cocky dental senior who once kissed him.

Song faints from fear at his first treatment; Jay comforts him but secretly seeks Yada’s help.

Song ruins Jay’s dental work while streaming and learns Jay’s mother secretly owns his dorm.

Song wonders if Jay remembers their drunk kiss, while hiding his life from his visiting nephew.

A love rivalry emerges between Jay and Captain over Sant.

Captain confronts Jay about liking Song, vowing to compete for his heart after a night of gaming.

Song feels insecure as Jay wavers; later, Jay visits his hometown for a project as family troubles rise.

Song and Jay become a couple, but Song’s grandmother’s collapse forces him to confront his mother.

On a redo of their first date, Jay opens up about his late brother Jen after running into his mother.

Song’s birthday surprise backfires when he learns Jay’s birthday is tied to his brother Jen’s death.

Jay trains in Song’s hometown; work strains their love until they choose to move back there together.