Chen Mumian, who is in the third year of high school, is known as the "little bully" of B City's vocational high school. Since then, an "uninvited guest" has come to her home. He is the son of her mother's good friend's family. He has very good academic performance and is a student in the key class opposite Chen Mumian's school. With this "younger brother", she has gradually learned to be gentle with her irritable personality.
Purpose: redemption
