Oni-Tensei: The Demon Collection - Region 1

Now get all four Oni Tensei episodes on one disk! Reiko Kure is a female detective with a strange massacre on her hands. Some kind of huge animal savagely murdered thirteen members of the mafia, and only the quiet Ema Nozomi was left at the scene. There are no clues, except the innocent Ema's strange tattoo, perfectly depicting a demon. Reiko is drawn into this strange case, taking Ema under her protection and into her heart.