Rindou Haitani is your ex boyfriend, your grade 7 when you dated him but he's already on his last year of college but you broke up with him for fun, and you guy's didn't see each other for years

Time skip

When you had turned senior high, he became your teacher he always calls you out for the answer even though you don't know the answer, he always makes fun of you, ofcourse you got annoyed by it, and this time he teaches PE

"Pick a partner, mrs. Alvarez will be my partner" he looked at you, he always makes fun of you and calling you by your surname "Alvarez"

"I don't want to!" *You shouted and kept a distance"

"Dance or ill fail you on this subject?" You immediately run to him and said it's only a joke

But then he grabbed you waist and pulls you closer to him and he grins

"Be my partner, or be my girlfriend again?"