My popular older sister! My gentle childhood friend! She kneels before a massive cock slap, reluctantly taking it into her mouth, gazing at it in pure madness! "That's enough!" In the corridor of the villa where they're held up, Yukito's older sister, Suzuka, the strong-willed, big-sister type student council president, confronts him. Takamine, the disciplinary officer and Yukito's homeroom teacher, who accompanied them under the guise of chaperone duty, walks away looking displeased. Yukito watches from a distance… "Are you okay, Reiya?" Kuonji Otowa, the girl who was the reason Yukito came to participate. Reunited with his childhood friend, Yukito realizes that his feelings from their childhood haven't changed. Reiya, his only friend he can talk to without reservation, is Otowa's fiancé, chosen by their parents. Otowa, concerned about Reiya, who is exhausted from feeling the responsibility of being the inviter and putting on an excessively high level of pressure. Yukito watched from a distance... He had come to Reiya's villa with his classmates, but news broke that Reiya's sister, Kotomi, had been humiliated and murdered, and that a suspected murderer had fled near the villa... In the midst of fear and anxiety... they soon... "He's... insane..." With a look of frustration on his face, Takamine pulled down his jeans, squatting in front of the exposed black shorts, about to press his nose against her pubic mound. Yukito watched from a distance... "I can't go now..." His impatience was not about saving his sister, but a different kind of excitement, a longing for what might happen next. Yukito was shocked by his own actions... that he was more interested in watching than helping. Then he heard Otowa's voice... Reiya and Otowa were playing in the garden pool, looking like lovers... At that moment, Yukito...