When the son of an American man and a Japanese women is killed, the man transforms into Tetsuo.
When a number of suicide victims slash themselves in their sleep, detective Keiko Kirishima is called to investigate.
Yuki lives at home in peace until one day a unit of assassins breaks in and kill her mother. In order to revenge herself Yuki becomes a demon of vengeance by donning gothic lolita clothing, using a parasol as a deadly weapon, and executing the guilty in God's name.
