Strike the Blood: Kieta Seisou-hen

While several of the girls board and investigate Vatler's drifting ship, Akatsuki Kojou and Himeragi Yukina awaken under highly suspicious circumstances. The two find themselves alone inside their school's gymnasium, completely devoid of any memories from the previous day. To make matters more baffling, they are lying together on a single futon, and Yukina is inexplicably dressed in an old-fashioned physical education uniform complete with bloomers. Neither can offer a rational explanation for how they ended up in this compromising situation or why her attire has changed so drastically. The confusion quickly escalates into a full-blown crisis when additional clues surface. A bloodstained baseball bat is discovered nearby, and one of their weapons has gone missing. As various factions mobilize to piece together the fragmented events, a frantic race begins to uncover the truth. The investigators must unravel a bizarre puzzle connecting the mysteriously abandoned vessel, the ominous weapon left behind at the scene, and a purple bra found hidden within the protagonist's pockets. With time running out and evidence pointing in contradictory directions, solving the mystery becomes their most urgent challenge.