As many of the girls probe Vatler's drifting vessel, Akatsuki and Himeragi awaken alone inside the school gymnasium, possessing no memory of the previous day and lacking any explanation for why they shared a single futon or why Himeragi dons an antiquated school PE uniform complete with bloomers at school. A blood‑stained baseball bat and a weapon quickly intensify the enigma as factions scramble to unravel the secrets surrounding the deserted vessel, the crimson bat, and a violet bra hidden in the MC"s pockets.
