After Akihito Kanbara reunites with Mirai Kuriyama—whom he believed had vanished after defeating Beyond the Boundary—he discovers a hear...

Short mini-theater specials included in the BD/DVD volumes.

After Akihito Kanbara reunites with Mirai Kuriyama—whom he believed had vanished after defeating Beyond the Boundary—he discovers a hear...

Taking place three years before the TV series, episode zero follows Hiroomi Nase's mission to subdue the infamous half-human, half-youmu Aki...