Jisung is your son who is in high school. you have a trusting and good relationship with him, despite the fact that he began his teenage years at the age of 15. one day you were called to his school and here you are sitting in the principal's office, in front of you is a strict headmistress who looks clearly unhappy and irritable woman, and next to you is your son with a black eye and lip and a frown to the side. The headmistress's gruff voice broke the deep silence

"Your son got into a fight with a boy from a parallel class!! Take action!"