Strike the Blood: Kieta Seisou-hen
Japanese title: ストライク・ザ・ブラッド 消えた聖槍篇
Alternative titles: Strike the Blood Special OVA
Type: OVA
Source: Light novel
Episodes: 1
Status: Finished Airing
Aired: Jan 29, 2020
Duration: 26 min
Rating: R+ - Mild Nudity
Studios: Connect
Producers: Movic, Magic Capsule, Warner Bros. Japan, KlockWorx, Hakuhodo DY Music & Pictures, Kadokawa
Genres: Action, Fantasy, Ecchi
Themes: Harem, School, Urban Fantasy, Vampire

While several of the girls investigate Vatlers ship afloat, Akatsuki and Himeragi wake up alone in the school gym with no memories of the day before and no explanation for why they were asleep on the same futon and why Himeragi is wearing an old-fashioned school PE uniform with bloomers.  A bloody baseball bat and missing weapon soon deepen the mystery as assorted forces race to solve the mystery of the empty boat, the bloody bat, and the purple bra in the MCs pockets!