Adrift
Mr. Tsuyuki and Mr. and Mrs. Hasue, among others, have formed a mob. Mr. Tsuyuki convinces the others that they must kill Takuma. Hotaru looks for her brother, who is nowhere to be found, but she finds the book about Hell Girl, and runs away with Takuma.
Aired 31/03/2007EP 25 - Adrift
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)