Strike the Blood IV
Japanese title: ストライク・ザ・ブラッド IV
Type: OVA
Episodes: 12
Source: Light novel
Genres: Action, Fantasy, Ecchi
Studios: Connect
Producers: Movic, Magic Capsule, Warner Bros. Japan, KlockWorx, Hakuhodo DY Music & Pictures, Kadokawa
Duration: 25 min per ep
Rating: R+ - Mild Nudity

Fourth season of Strike the Blood.