by The upcoming TV anime A Certain Dark Side of Girls Coexisting (ITEM), a spin-off of the popular A Certain Magical Index franchise, will officially begin broadcasting in Japan on October 9, 2026. Along with the premiere announcement, a brand-new key visual featuring all five members of ITEM has been revealed, including the newly introduced fifth member, Hanano Chobi.
The latest announcement also confirms the domestic streaming schedule and the launch of an official web radio program. With the four familiar ITEM members now joined by a specialist in disguise, the anime is set to explore a darker side of Academy City, focusing on the dangerous missions, unusual daily lives, and complicated relationships of the girls who operate within its underground “dark side.”
A Certain Dark Side of Girls Coexisting Anime Release Date
A Certain Dark Side of Girls Coexisting, officially titled Toaru Anbu no Shoujo Kyousei (ITEM) in Japanese, will premiere on October 9, 2026.
The first episode will air on TOKYO MX and BS11 at 24:30 JST, while AT-X will broadcast the anime earlier at 22:30 JST. In Japan, the 24:30 time slot technically falls after midnight on October 10, but broadcasters commonly list it as the late-night October 9 slot.
The anime is being produced by J.C.STAFF, a studio with a long history of working on the A Certain franchise. The staff includes director Tatsuyuki Nagai, series composer Shogo Yasukawa, character designer Shigeki Kimoto, and composer Maiko Iuchi.
New Key Visual Brings All Five ITEM Members Together
The newly released key visual brings together the original four members of ITEM—Mugino Shizuri, Takitsubo Rikou, Frenda Seivelun, and Kinuhata Saiai—alongside the new fifth member, Hanano Chobi.
Hanano is described as a specialist in disguise, making her addition particularly interesting for an organization that specializes in dangerous covert missions.
The visual has a noticeably darker atmosphere than a conventional character poster. Mugino’s green Meltdowner ability illuminates an otherwise cold and industrial alley, while the five girls stand against the shadowy background.
That imagery reflects the central contrast of the series: ITEM may sometimes look like a group of girls casually talking together, but their actual work involves missions that the ordinary citizens of Academy City are never supposed to see.
What Is ITEM?
For newcomers to the A Certain universe, ITEM is an underground organization operating within Academy City.
Academy City is a technologically advanced city where around 2.3 million people live, with roughly 80 percent of its population consisting of students. The city is famous for its scientific research and its ability-development programs, which classify students from Level 0 to Level 5 depending on their supernatural abilities.
However, the seemingly peaceful city has a hidden side.
Behind the public-facing institutions are various underground groups known collectively as the “dark side.” These organizations carry out missions that cannot be officially acknowledged, including dangerous operations, sabotage, information gathering, and other morally questionable jobs.
ITEM is one of these groups.
The team consists primarily of four girls, each with a different ability or combat specialty. The arrival of Hanano Chobi introduces a new dynamic to the group and appears to be one of the major elements of the anime’s story.
Meet the Five Members of ITEM
Mugino Shizuri
Mugino Shizuri, voiced by Ami Koshimizu, is the most powerful member of ITEM.
She is one of Academy City’s seven Level 5 espers and possesses the powerful ability known as Meltdowner. Her ability allows her to manipulate a destructive form of energy, making her one of the most dangerous characters in the series.
Mugino’s overwhelming strength is also reflected in the new key visual, where her green energy creates the poster’s signature lighting effect.
Takitsubo Rikou
Takitsubo Rikou, voiced by Aya Suzaki, plays a more specialized role within the team.
Her ability allows her to detect and track the faint AIM diffusion fields produced by espers, making her extremely useful when ITEM needs to locate or follow another ability user.
Although Takitsubo generally has a calm personality, her importance to ITEM’s missions should not be underestimated.
Frenda Seivelun
Frenda Seivelun, voiced by Maaya Uchida, specializes in explosives, traps, and unconventional combat tactics.
She often brings a more energetic personality to the group, creating a sharp contrast with the darker missions ITEM is forced to undertake.
Her ability to prepare traps and explosives makes her particularly effective when confrontation is not the best option.
Kinuhata Saiai
Kinuhata Saiai, voiced by Chinatsu Akasaki, is known for her ability to manipulate nitrogen.
Her power can be used for both offense and defense, and she is capable of creating an extremely strong protective barrier.
Kinuhata also has a distinctive way of speaking, frequently using the word “super,” which has become one of her most recognizable character traits.
Hanano Chobi
The newest member is Hanano Chobi, voiced by Kana Hishikawa.
Unlike the other four members, Hanano is a disguise specialist, adding a new skill set to ITEM.
Her arrival appears to be much more than a simple expansion of the team. According to the anime’s story setup, meeting this “fifth girl” draws ITEM into a new and deeper conspiracy within Academy City’s underground world.
A Story About the “Dark Side” of Academy City
The central appeal of A Certain Dark Side of Girls Coexisting is its focus on a part of Academy City that many A Certain stories only show from the outside.
Instead of following the students living relatively normal school lives, this spin-off focuses on girls who are directly involved in the city’s underground operations.
The official story describes ITEM as an elite four-member unit responsible for jobs that cannot be allowed to become public. Their missions can involve violence, destruction, and eliminating evidence.
At the same time, the girls still have surprisingly ordinary conversations between missions. The main PV deliberately contrasts their brutal assignments with casual conversations that resemble those of ordinary office workers or friends spending time together.
That contrast is expected to be one of the anime’s biggest strengths.
The series isn’t simply about superpowered battles. It also explores the relationships between the girls and how they survive while working in a world where loyalty, trust, and morality can become complicated.
Main PV and Theme Songs
The anime’s main promotional video was released earlier in July and offered the first major look at the action and atmosphere of the series.
The PV shows ITEM infiltrating a facility connected to esper research before quickly shifting into scenes of explosions, combat, and Mugino using Meltdowner.
It also introduces the lighter side of the group, showing the girls casually talking together despite the dangerous world around them.
The anime will feature two new theme songs:
- Opening Theme: “Ghost Sequence” by East Of Eden
- Ending Theme: “原子崩し (Meltdowner)” by Kishida Kyodan & The Akeboshi Rockets
The choice of “Meltdowner” for the ending is particularly fitting because it directly references Mugino’s signature ability.
Streaming Information
Japanese viewers will have several options to watch the series.
ABEMA will stream the anime from 24:30 JST on October 9, matching the television broadcast schedule. However, there is an additional early opportunity for viewers: Episode 1 will receive a limited real-time advance stream on ABEMA on October 3 at 23:00 JST.
Other Japanese streaming platforms will begin releasing the series from October 16 at 12:00 JST, including ABEMA Premium, d Anime Store, U-NEXT, Anime Hodai, DMM TV, FOD Premium, Hulu, and niconico. Transaction-based platforms such as Prime Video and Bandai Channel are also scheduled to begin distribution from October 16.
These dates refer to the Japanese domestic release schedule; international availability should be checked separately once regional streaming services announce their lineups.
Official Web Radio Announced
Alongside the anime, an official web radio program titled “A Certain Radio’s Girl’s Coexistence” has also been announced.
The program will feature the voices of the four established ITEM members:
- Ami Koshimizu
- Aya Suzaki
- Maaya Uchida
- Chinatsu Akasaki
Rather than having one permanent host, the four actresses will take turns serving as personalities.
The first episode is scheduled for October 2, 2026, at 6:00 PM JST, one week before the anime premiere. New episodes are planned for every other Friday at 6:00 PM JST.
This allows fans to hear more from the cast and learn about the characters before the anime officially begins.
A Certain Dark Side of Girls Coexisting Is Part of a Major Toaru Revival
The announcement is also significant because A Certain Dark Side of Girls Coexisting is part of a broader revival of the A Certain franchise.
The official Toaru Project portal announced in February 2025 that the franchise was restarting its anime projects, with both A Certain Dark Side of Girls Coexisting and A Certain Scientific Railgun Season 4 receiving TV anime adaptations.
The new series therefore arrives at an important moment for long-time Toaru fans while also giving newcomers a chance to experience a different side of Academy City.
The original light-novel franchise, A Certain Magical Index, remains one of the major pillars of the broader Toaru universe, which has expanded into manga, anime, films, games, and multiple spin-off series. The franchise has surpassed 31 million copies in cumulative circulation, highlighting its long-running popularity.
A New Beginning for ITEM
With the addition of Hanano Chobi, the familiar ITEM lineup is changing from four members to five.
That change could significantly alter the team’s relationships and mission dynamics. Hanano’s disguise abilities also give the group a new tactical option, while her arrival appears to be directly connected to the larger conspiracy awaiting ITEM.
For longtime Toaru fans, the biggest attraction will be seeing familiar characters such as Mugino, Frenda, Takitsubo, and Kinuhata take center stage. For newcomers, the series offers a darker entry point into Academy City’s world, focusing less on traditional school-life storytelling and more on espionage, underground organizations, superpowers, and morally complicated missions.
With a striking new key visual, a five-member ITEM lineup, confirmed Japanese streaming dates, new theme songs, and an official web radio program, A Certain Dark Side of Girls Coexisting is shaping up to be one of the notable supernatural action anime of Fall 2026.
