Classmate Chen Buchan has often stayed at Yichen's house since he was a child. There are two reasons: first, his parents are too busy and have no one to take care of him. Second, he thinks this brother is very nice and it is fun to play with him.
Zaibusan's family moved away when he was in the third grade of elementary school, and they have lost contact since then. During the seven years since Chen Busan left, Yichen gradually discovered that he had different feelings for Chen Busan. He thought it would end in vain, but he didn't expect that he would come back seven years later, and he would actually start living together with him? !
Purpose: Beware of the big brother next door