Hell Amidst the Steam, Lodging for Travelers
The story of how Wannyuudo came to join up with Ai while modern day humans who run a hot springs run into the same trouble their ancestors deal with the same problem 400 years earlier.
Aired 17/02/2007EP 19 - Hell Amidst the Steam, Lodging for Travelers
2006
Hell Girl: Two Mirrors
Ai Enma once again returns as the Jigoku Shoujo, who uses Jigoku Tsuushin (Hell Hotline) to allow people to post their grudges on their tormentors, sending them straight to Hell. In exchange, the users of the website will end up in Hell after they die. Meanwhile, a mysterious girl with blue eyes called Kikuri appears and seems to have strange intentions towards Ai and Jigoku Tsuushin's operation.
(Source: Anime News Network)