Studio Kai

Studio Kai, Inc.
Native name
株式会社スタジオKAI
Kabushiki-gaisha Sutajio KAI
TypeKabushiki gaisha
IndustryJapanese animation
FoundedJune 2019; 7 years ago (2019-06)
Headquarters5-17-13 Naritahigashi, Suginami, Tokyo, Japan
Key peopleKenji Ōshiba (president and CEO)
Total equity¥5,000,000
OwnerADK Emotions
Number of employees
133 (as of the end of December 2025)
Websitest-kai.jp
Footnotes

Studio Kai, Inc. (Japanese: スタジオKAI, Hepburn: Kabushiki-gaisha Sutajio KAI) is a Japanese animation studio based in Suginami, Tokyo. It was founded by ADK Emotions in June 2019.

History

Studio Kai was founded by ADK Emotions in June 2019. The following month, Gonzo transferred parts of its anime production, intellectual property, and rights management business to the studio. The studio reported 165 million yen loss in 2020.

On April 13, 2026, Studio Kai filed for insolvency after reporting a loss of ¥565 million in 2025.

Works

Television series

Title Director(s) First run start date Last run end date Eps Note(s) Ref(s)
Umamusume: Pretty Derby 2nd Season Kei Oikawa January 5, 2021 March 30, 2021 13 Sequel to Umamusume: Pretty Derby by P.A. Works.
Super Cub Toshiro Fujii April 7, 2021 June 23, 2021 12 Based on a light novel written by Tone Kōken.
Skeleton Knight in Another World Katsumi Ono April 7, 2022 June 23, 2022 12 Based on a light novel written by Ennki Hakari.
Co-produced with Hornets.
The Prince of Tennis II: U-17 World Cup Keiichiro Kawaguchi July 7, 2022 September 29, 2022 13 Based on The Prince of Tennis franchise.
Co-produced with M.S.C.
Shine Post Kei Oikawa July 13, 2022 October 19, 2022 12 Based on a light novel written by Rakuda, part of a multimedia project.
Fuuto PI Yousuke Kabashima August 1, 2022 October 17, 2022 12 Based on a manga written by Riku Sanjo, related to Kamen Rider W.
Captain Tsubasa: Junior Youth Arc Katsumi Ono October 1, 2023 June 30, 2024 39 Sequel to Captain Tsubasa by David Production.
Umamusume: Pretty Derby 3rd Season Kei Oikawa October 5, 2023 December 28, 2023 12 Sequel to Umamusume: Pretty Derby 2nd Season.
7th Time Loop: The Villainess Enjoys a Carefree Life Married to Her Worst Enemy! Kazuya Iwata January 7, 2024 March 24, 2024 12 Based on a light novel written by Touko Amekawa.
Co-produced with Hornets.
Hell Teacher: Jigoku Sensei Nube Yasuyuki Ōishi July 2, 2025 March 25, 2026 26 Based on a manga written by Shō Makura.
A Star Brighter Than the Sun Sayaka Kobayashi October 2, 2025 December 18, 2025 12 Based on a manga written by Kazune Kawahara.
Sentenced to Be a Hero Hiroyuki Takashima January 3, 2026 March 26, 2026 12 Based on a light novel written by Rocket Shokai.
The Ramparts of Ice Mankyū April 2, 2026 July 2, 2026 14 Based on a manga written by Kōcha Agasawa.
Snowball Earth Munehisa Sakai April 3, 2026 June 26, 2026 13 Based on a manga written by Yuhiro Tsujitsugu.
Mistress Kanan Is Devilishly Easy Yasushi Muroya April 5, 2026 June 21, 2026 12 Based on a manga written by Nonco.
The Ramparts of Ice (season 2) Mankyū October 1, 2026 TBA TBA Sequel to The Ramparts of Ice.
Hololive: Let's Head Out! Shunsuke Machiya TBA TBA TBA Part of the Hololive Production VTuber agency franchise, produced as part of its 10th anniversary celebrations.

Films

Title Director(s) Release date Note(s) Ref(s)
Fuuto PI: The Portrait of Kamen Rider Skull Yousuke Kabashima November 8, 2024 Sequel to Fuuto PI.

Original net animations

Title Director(s) Release date(s) Eps Runtime Note(s) Ref(s)
Cagaster of an Insect Cage Koichi Chigira February 6, 2020 12 25–33 minutes Based on a manga by Kachō Hashimoto.
Animation produced by Okinawa Gonzo.
7 Seeds Part 2 Yukio Takahashi March 26, 2020 12 24–31 minutes Sequel to 7 Seeds, based on a manga by Yumi Tamura.
The Prince of Tennis II: Hyotei vs. Rikkai Game of Future Keiichiro Kawaguchi February 13, 2021–
April 17, 2021		 2 45–47 minutes Based on The Prince of Tennis franchise.
Co-produced with M.S.C.

OVAs