Synopsis: How to Be a Family

Do-yeon and Eun-ha, who became a family due to their parents' remarriage, become strangers again due to their parents' divorce. The two met again after many years. Eun-ha is obsessed with Do-yeon, and Do-yeon is burdened by his younger brother... What's even worse is that his feelings for Eunha are not 'brotherly love'.