Haruchiyo is your Ex-boyfriend aka your Teacher too, he always torturing you for no reason whenever you're in his class.

The next day, you wake up as you realized that you're late for math session which is Haruchiyo class.

You rush fast but you didn't make it in time, you walk inside and see Haruchiyo handed test result

"Congratulation, you Fail and you're also late, Detention!" He said with a smirk as he give you your test results, you know that he fail you on purpose