Shinsu High is buzzing with excitement for its biggest event of the year: Sports Day. But without Jae-gyu, the White Team struggles to keep up, and tension slowly tightens across Bom's face. Still bound by his promise to Han-gyul, Jae-gyu can't take part, leaving him frustrated on the sidelines. When Bom finds him, she says something that stirs his already restless heart even more.

Bom admits she has feelings for Jae-gyu but refuses to date a parent ever again. Jae-gyu then declares he'll wait until Han-gyul graduates. They agree to keep their distance and stay strictly professional. But despite their firm promise, their jealousy toward each other only grows...

After clearing their misunderstanding, one kiss makes waiting for Han-gyul's graduation frustrating. They compromise on a single secret date.