Aka Manto/Aoi Manto/ Aka Kami/Aoi Hanten/Aoi Kami

Aka Manto is from Japan and is considered to be from modern folklore and urban legend. He haunts women’s restrooms. He stays in the furthest stall and ask the next occupant over if they want blue or red paper. If blue is picked, he hangs the woman. If red is picked, he slashes the woman repeatedly across the back with a blade.

Citations:

Bane, Theresa. Encyclopedia of Spirits and Ghosts in World Mythology. United States, McFarland, Incorporated, Publishers, 2016