Hiroshi visits his girlfriend's home for the first time after six months of dating. Upon entering, he is immediately captivated by the stunning beauty of her mother. He had heard that his girlfriend's family is a single-parent household, supported solely by her hardworking mother who juggles multiple part-time jobs. Later, as Hiroshi leaves his girlfriend's room and heads downstairs, he finds himself irresistibly drawn to the long skirt of her mother, who is napping in the first-floor Japanese-style room. The moment he leans in, breathing heavily, his heart is lost forever.