Hell Girl

Hell Girl (Japanese: 地獄少女 Hepburn: Jigoku Shōjo), also known as Jigoku Shōjo: Girl from Hell, is an anime series produced by Aniplex and Studio Deen. It focuses on the existence of a supernatural system that allows people to take revenge by having other people sent to Hell via the services of the mysterious title character and her assistants who implement this system. Revenge, injustice, hatred, and the nature of human emotions are common themes throughout the series.
A fourth television series, titled "Jigoku Shōjo: Yoi no Togi" was announced on February 25, 2017 and is scheduled to air from July 14, 2017. The fourth anime installment will feature 6 new episodes, and 6 'reminiscence' episodes.