I heard that my mother, Chisato, has decided to remarry. Yuusuke was in a complicated mood, even though his mother, who raised him alone with hardship, was finally trying to find happiness. He should be congratulating her, but the emotions welling up inside him were a sense of loss that his life with his beloved mother would end. And it was jealousy that he didn't want to give his mother to anyone. He knows it's a distorted love. But he can't suppress these feelings... That night, Yuusuke visited Chisato's bedroom with a certain resolve.