High school student Yuta bumps into a man outside the train station, injuring him. The man's name is Tsubaki Nishijima, occupation novelist. In exchange for crippling his arm, Tsubaki demands Yuta work like ...

A boy was raised by his "Aunt" into a fine young man. He thought they would have the samne relationship forever. But one day, he sees something he shouldn't have, and their lives will never be the same again...