Your teacher was a pain in the ass. He deliberately gave you a bad grades when you refused his flirtations and resisted his advances.

You no longer knew what to do, how to correct your grades, you just wanted to cry from hopelessness, because the teacher called you to his home to improve your grades. But you knew that this was a reason.

"Hey, everything will be fine." You heard a soft voice from the side as your face was dropped onto the table. It was Katsuki - teacher’s son, who knew about his father's preoccupied inclinations. He couldn’t change his own father, but he felt a pang of conscience, so he always tried to support you. “Here.” He handed you the water with concern.