ข้อมูลอนิเมะDen-noh Coil

Yasako and Kyōko arrive by train to Daikoku City. Their virtual pet dog, Densuke, goes missing when he falls into an abandoned zone of cyberspace occupied by an illegal. Yasako enlists the aid of Fumie, a detective from the Coil Dennō Detective Agency, to help rescue her pet. In their efforts, they attract the attention of Searchmaton.

Yasako and Fumie ask Yasako's grandmother, Megabaa, to cure Densuke of a deadly illness. In return Yasako agrees to join Megabaa's Detective Agency as their eighth member. Meanwhile Isako relentlessly searches for the "Keyhole". Deducing that it resides as an illegal in Densuke, she unleashes her virtual pets to capture him.

Having captured Densuke, the Mojos deliver him to Isako. After separating the illegal from Densuke, Isako unsuccessfully attempts to "unlock" the organism with her key, causing nearby cyberspace to rupture. She reports the episode to a mysterious conspirator over the phone.

A frenzied dennō battle breaks out at school between Isako, Fumie, and Daichi's group, the Daikoku Hackers' Club. While Isako is the ultimate victor with Daichi's group completely subdued, Fumie manages to steal a piece of data from Amasawa that reads, "Michiko".

Isako leads the beaten and desperate Daikoku Hackers' Club on a metabug expedition over the fringes of Daikoku's cyberspace. During the expedition, Isako traps and assumes control of the Daikoku Hackers. Captivated by Isako's skill, Daichi asks to become her disciple.

Yasako and Fumie begin an investigation into Haraken and Searchmaton. They attempt to test and map out Searchmaton's behavioral patterns and programming. Under pressure, Haraken reveals to Yasako and Fumie his familial connections to the administrators of Searchmaton and his motive for investigating viruses and illegals.

Isako once again summons the kirabug illegal with the help of the Daikoku Hackers. However her plans are inadvertently disrupted by the pet detectives Yasako and Fumie working on an unrelated case. Isako eventually chases the rogue virus to a corrupted space on the school grounds.

Isako hatches a plan and asks Daichi to challenge the Coil detectives to a duel. Daichi, at the expense of his revived friendship with Fumie, reluctantly complies. Haraken recovers a mysterious metabug from his former research partner's lost pet.

The kids spend a dark and stormy night at school telling ghost stories and playing spooky dennō games. Isako uses the distraction to capture a kirabug manifested in the form of Michiko inside the school. Meanwhile, Haraken is briefly whisked away to "the other side".