#1 - Meta-bug Struggle Bus Tour
Season 1 - Episode 5
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.
#2 - Black Automaton
Season 1 - Episode 21
As First and Third elementary merge for classes on the top floor of a Megamass office building, Isako finds herself involved in a conspiracy by Megamass to research obsolete space and the effects of Dennō Coil.
#3 - The Summer Festival and the Duel
Season 1 - Episode 8
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.
#4 - Daikoku City - Hacker Club
Season 1 - Episode 4
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".
#5 - The Last Summer Vacation
Season 1 - Episode 17
Haraken, tortured by the possibility that Kanna Ashihara still exists in "the other side", asks Isako to take him there.
#6 - The Door to a Strange World
Season 1 - Episode 18
Haraken catches a brief glimpse of Kanna before the collapse of Isako's gateway. Fearing for her nephew's life, Tamako confiscates his glasses. Meanwhile, obsolete space begins to invade Megabaa's shop as Kyōko, Fumie and Yasako spend the night.
#7 - The Boy on the Other Side of the Station
Season 1 - Episode 15
Yasako, attempting to find the place where she first met 4423, meets a boy named Takeru who guides her through the neighborhood. Deducing that the place from her memories was a virtual space deleted by Searchmaton, Yasako heads home as Takeru reports the day's events to a mysterious collaborator.
#8 - The Last Coil
Season 1 - Episode 22
Yasako and Isako, on the run from Megamass and a powerful new searchmaton, take refuge in Megabaa's store. There, it is discovered that Densuke has the potential to open a stable portal to "the other side", now known as "Coil Domain". It is revealed that Coil Domain, Michiko, Imago and Kirabugs are remnants of an experiment gone awry, covered up by the Megamass conglomerate.
#9 - Kanna and Yasako
Season 1 - Episode 20
With Kanna's glasses, Haraken sneaks out once again to the "other side" where he finally makes amends with a digital apparition of her. Yasako ventures in to the rescue with Isako and Tamako's help. It is revealed that Tamako was the first person to open the gate to the "other side", and the meaning of the show's title, Dennō Coil, is the phenomenon of the separation of one's dennō body from their physical body.
#10 - The Black Visitor
Season 1 - Episode 19
After Kyōko is taken to the "other side", Yasako and Fumie evade the illegals and guide Kyōko's dennō body back to her real body with the help of Densuke.
#11 - Mobilise! Coil Detective Agency
Season 1 - Episode 7
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.
#12 - Yasako and Isako
Season 1 - Episode 26
Yasako realizes the nature of Michiko, 4423, and the Coil Domain. Aided by her friends and family she must fight Michiko's grip on Isako and to avoid Nekome's desire to dispose of her consciousness.
#13 - The Last Plesiosaur
Season 1 - Episode 13
The protagonists agree to aid Denpa in relocating a docile plesiosaur-type illegal, which he had previously been raising in an obsolete space now scheduled for reconstruction. The lonesome illegal, driven to find more of its kind, follows the children in a hazardous journey through the city.