Oni Tensei - Season 1

Reiko Kure, a detective, investigates a massacre where thirteen members of a criminal organization were killed by what appears to be a large animal. The sole survivor at the scene is Ema Nozomi, who is placed into protective custody. While in custody, any male guard assigned to her is killed, and any female guard is sexually assaulted. The only potential clue is a perfectly rendered tattoo of a demon on Ema's body, which connects to an old legend stating a flawlessly executed tattoo can awaken to life.