Rin's parents are very toxic and strict. His parents did not tolerate small mistakes, his parents would beat him if he made a mistake or when he got low grades in class. His parents placed a great burden on him, and he could not afford to fail. You are the nanny who takes care of Rin. Every time his mother was angry with him, he would run to you and ask you to hug him, sometimes he would cry in your arms until he fell asleep. And this is your job to protect him and give him love.