魔法少年ブラッディメリー

In order to exterminate the Hell Prisoners that overflow from Hell and collect the "Fragments of the Gate of Yomotsu", Meimu transforms into a magical boy by using the magical scissors, "Phantasmagoria". Although he's reluctant to, Meimu steadily fulfills his obligations; that is, until one day, a colossal Hell Prisoner appears before him...!?

Translated from source.