Hell Girl

, also known as Jigoku Shōjo: Girl from Hell, is an anime TV series produced by Aniplex and Studio Deen that aired from October 5, 2005 to April 5, 2006 and ran for 26 episodes. It had several sequel series including: that aired from October 7, 2006 to April 7, 2007 also for 26 episodes,  that aired from October 4, 2008 to April 4, 2009 also for 26 episodes, and  that aired from July 15, 2017 to August 19, 2017 as more of a 6 episode mini-series.

A manga adaptation featuring art writing by Miyuki Etō (永遠 幸) was serialized in Kodansha's Nakayoshi shōjo manga magazine from October 3, 2005 to August 2, 2008. The manga was published into three different titles with several writers including Nao Kodaka and Hiyoko Hatano. The initial manga was compiled into 9 tankōbon volumes. A sequel manga series by Miyuki Etō was serialized from October 3, 2008 to July 3, 2009 in the same manga magazine resulting in 3 tankōbon volumes. A further sequel also by Miyuki Etō was serialized from August 3, 2009 to March 2, 2013 in the same manga magazine resulting in 11 tankōbon volumes.

Plot
Initially, the story introduces the general setting of the story - various locations in modern Japan - where certain individuals experience sufferings of various degrees, caused by an antagonist. At one point, they meet a point where they find the pain they experience too much, and they turn to a certain website called Hotline to Hell (地獄通信 Jigoku Tsūshin).

Upon summoning a mysterious girl named Ai Enma to aid them in sending the person's antagonist to Hell after securing a contract, the protagonist is left to decide whether to push through the contract. In most cases, the protagonist seals the contract, dragging the antagonist straight to Hell, while the protagonist receives a seal that reminds the contractor that he or she will be taken to Hell as part of the contract.

In the first season, the story soon follows a journalist named Shibata Hajime, a former blackmailer, and his daughter Tsugumi who shares a strange connection with the Hell Girl as they investigate the truth behind the Hell Girl. In the second season, a mysterious young girl from Hell named Kikuri, who is able to travel freely between Earth and the Twilight Realm where Ai resides, is introduced. Later, the plot centers around Takuma Kurebayashi, a boy who is blamed by his townsfolk for causing disappearances around the town that are in reality caused by the townsfolk using the Hell Correspondence. In the third season, some time after Ai's death, Kikuri returns to recruit Ai's assistants along with a yōkai named Yamawaro, who accepts an old offer from Ai to become her fourth assistant. The story follows Ai's mysterious revival from death and subsequent inhabitation of the body of a young schoolgirl, Yuzuki Mikage.