Azumi suddenly came to visit her older brother, who lives alone in Tokyo. As he sees her smiling in their sunlit room, he feels as though she's a completely different person—whether because it's been so long or because she's grown up, he can't tell. Though she still has her old clingy personality, there's now a mature air about her that stirs something deep within him. "Can I sleep with you?" Her simple question hints that their relationship is about to take a bold new step forward.