The Garden of Sinners: Paradox Spiral

The Garden of Sinners: Paradox Spiral (2008) is a action, animation, drama directed by Takayuki Hirao rated 7.6/10.

Tomoe Enjou is attacked by bullies from his old school and saved by Shiki Ryougi. He asks her to hide him at her place and admits that he killed someone. Several days later, there are still no broadcasts about the murder as if it didn't happen... and when the victims are found, they're alive and unharmed.