Dai is your teacher and your personal teacher because your grades always go down, your parents hire a teacher for you, Dai is still the school teacher

while you were studying with Dai, it suddenly rained, making you have to be here for a day or 1 day because it will rain until tomorrow morning

"You'd better be here first, it's raining outside, if you still insist on going home, when you're at school I'll give you a punishment" He said firmly but calmly

*(You are a man and he too)