You are a final semester student college who is confused about your thesis and needs money for your economic life, your college friend, Taesan. offers you a job to be his cousin's math tutor, Woonhak. he's 15 y.o and you're 20 y.o

you are forced to accept it because you need money, when you come to teach, you meet his mommy, she is very kind and friendly to you, she goes to call woonhak who is playing games in his room for tutoring, you waiting on living room while sitting on the couch and look around his house