Kadokawa revealed the upcoming Delta and Gamma anime adaptation during the Dengeki Bunko Fall Festival Online 2026 live broadcast on Saturday to expand the science mystery franchise. The animated production adapts author Takuma Sakai’s popular light novel series The Science Notes by Delta and Gamma, published across Japanese bookstores under the original title Delta to Gamma no Rigakubu Note. Voice actress Kanna Nakamura portrays student Rio Iwama in the official video release, which pairs character dialogue with promotional visual art created by light novel illustrator Asagi Tosaka [1]. Production staff have not set a television premiere date.
Dengeki Bunko Confirms Delta and Gamma Anime Adaptation
Dengeki Bunko announced the television project during its autumn live stream celebration, which Japanese entertainment news outlet Dengeki Online confirmed in detailed coverage of the event schedule and upcoming editorial announcements. The presentation, officially branded as the Dengeki Bunko Fall Festival Online 2026 powered by ABEMA, revealed multiple projects for prominent book franchises. Both author Takuma Sakai and original illustrator Asagi Tosaka released celebratory comments following the broadcast, expressing gratitude to readers who have supported the series since its publishing debut [2].
Following the broadcast presentation, publisher Kadokawa confirmed the project while the official Dengeki Bunko Channel uploaded the announcement video for fans to view on the YouTube streaming platform. Lap Tsutsumi drew a commemorative illustration. The manga artist shared the celebratory drawing on X, depicting the Tsunagai High School science club gathered around their laboratory bench alongside congratulatory text marking the official adaptation milestone [1].
Key production specifics regarding the animation studio, director, series composition, and complete voice cast remain unannounced by Kadokawa. Unlike supernatural classroom series such as The Failure at God School, which center on divine academy battles, Sakai’s narrative deliberately anchors its dramatic conflicts in realistic high school laboratories and everyday physical science puzzles [1]. The publisher plans to share additional broadcast scheduling details in future announcements.
Science Notes of Delta and Gamma Portray School Life
The narrative of The Science Notes by Delta and Gamma follows the student members of the Tsunagai High School science club as they investigate unusual occurrences around their campus. The club members do not fight supernatural villains or monsters. Instead, the students apply standard classroom physics and chemistry principles to systematically analyze strange everyday events that happen throughout their school hallways, classrooms, and after-school club activities [1].
The narrative balances intellectual problem-solving with the emotional growth of youth, weaving an evolving story of first love between club members alongside their ongoing laboratory investigations and classroom experiments. Takuma Sakai designed the science club as a space where students examine natural laws while learning how to communicate with each other. Each chapter requires Rio Iwama and her club companions to collect physical evidence, formulate workable hypotheses, and test their logical assumptions before reaching final analytical conclusions [1].
Kadokawa classifies the series under the Japanese genre description of a “science youth mystery,” highlighting its dual focus on academic inquiry and realistic adolescent romance [2]. Students record their scientific findings in dedicated notebooks during each campus investigation. Readers observe the characters as they test hypotheses, examine observational data, and address personal dilemmas that emerge while spending afternoon hours together inside the high school science laboratory [1].
Production Art and Promotional Showcase at Dengeki Bunko Festival
Promotional visuals unveiled during the Dengeki Bunko Fall Festival Online 2026 offered audiences their first official glimpse of the characters in motion before television broadcast production began. Voice actress Kanna Nakamura portrayed Rio Iwama in the announcement video, delivering introductory character dialogue against visual sequences illustrated by light novel artist Asagi Tosaka on screen [1]. The promotional clip uploaded to the Dengeki Bunko Channel represents Nakamura’s initial public performance as the inquisitive protagonist.
Asagi Tosaka, who has served as the character designer and primary illustrator for the series since its initial volume, provided commemorative promotional art to celebrate the adaptation announcement on Saturday [2]. Dengeki Online confirmed that Tosaka released personal celebratory remarks alongside the artwork, thanking fans who have supported the creative team. The promotional art depicts Rio Iwama in her high school uniform surrounded by laboratory glassware, notebooks, and mathematical equations that define the visual aesthetic of the science club setting in the books. Manga artist Lap Tsutsumi also published original celebratory sketches online, showing the science club cast gathered around their laboratory work table in celebration of the anime project [1]. The shared sketches quickly circulated among readers across social media.
Dengeki Bunko distributed the promotional video across its online media channels shortly after the live stream broadcast concluded on Saturday [2]. Kanna Nakamura confirmed her casting role in the project. The audio performance provides listeners with an early preview of how Rio Iwama will sound in animated form.
Manga Serialization and Publishing History Under Kadokawa
Kadokawa first published The Science Notes by Delta and Gamma in print under its prominent Dengeki Bunko imprint in November 2024 with illustrations by Asagi Tosaka. The debut novel established Sakai’s creative partnership with Tosaka following their earlier publishing successes under the same editorial label. Kadokawa announced that the fourth light novel volume in the series will ship to retail bookstores and digital platforms across Japan on October 9 [1].
Following positive reader reception for the early light novel volumes, Kadokawa expanded the franchise into serialized comic publication. Manga artist Lap Tsutsumi launched the official manga adaptation of the series in Kadokawa’s Comic Dengeki DaiohG magazine on April 27. The monthly manga release translates Sakai’s written text into comic panel sequences, illustrating the science club experiments and character comedy for a growing comic readership [1].
The rapid progression from paperback debut to an animated television project underscores Kadokawa’s sustained investment in Takuma Sakai’s contemporary high school mystery story. The fourth novel volume arrives in Japanese stores on October 9. With the manga continuing its monthly serialization in Comic Dengeki DaiohG, the upcoming television anime marks another major step in establishing the title as a prominent multimedia franchise [1].
Takuma Sakai Creative Legacy From Butareba to Tsunagai High
Takuma Sakai established his standing in the light novel community after winning the prestigious gold prize in the 26th Dengeki Novel Prize competition in 2019. That distinction, representing effectively second place in the competitive newcomer contest, led to the publication of his breakout fantasy novel series Butareba: The Story of a Man Turned into a Pig. Published in Japan under the title Buta no Liver wa Kanetsu Shiro, Kadokawa issued the first volume of the Butareba light novels in March 2020 with illustrations by Asagi Tosaka [1].
The creative relationship between Sakai and Tosaka on Butareba established the collaborative foundation that later produced The Science Notes by Delta and Gamma under the Dengeki Bunko imprint. The Butareba light novel series inspired an ongoing manga adaptation illustrated by artist Minami, which began serialization in Kadokawa’s Dengeki Maoh magazine in August 2020 [1]. North American publisher J-Novel Club subsequently licensed both the original Butareba light novels and Minami’s manga adaptation for English-language publication and digital release.
The Butareba franchise achieved broader international recognition when its animated television series premiered in October 2023. With The Science Notes by Delta and Gamma, Sakai departed from fantasy isekai conventions to craft an observational mystery grounded in secondary school science and adolescent character relationships. The upcoming anime adaptation represents the second major light novel property created by Sakai and illustrated by Tosaka to make the transition to television screens [1].
- ONLINE NEWS Tai, A. (2026, October 3). The Science Notes by Delta and Gamma Light Novels Get Anime. Anime News Network. [Article Link]
- ONLINE NEWS Dengeki Online Editorial Staff. (2026, October 3). ‘Delta to Gamma no Rigakubu Note’ anime-ka ga happyo [Dengeki Bunko Fall Festival Online 2026]. Dengeki Online. [Article Link]
