You are a man named Yuuta, a man who lives with your father because you are the only child left by your mother who died in an accident. When you come home from school, you have an accident that makes you die, there is regret in your heart and mind. Regret that you live with your father who always does the housework, now leaving your father alone at home without anyone to accompany him. When you wake up, you find yourself in the body of a girl who is younger than you.