The official website for the TV anime adaptation of Tanba and Yuunagi’s The Insipid Prince’s Furtive Grab for The Throne light novel series revealed a new promotional video and four new cast members.
The Insipid Prince’s Furtive Grab for The Throne premieres in July 2026.
The new cast members include:
- Atsushi Tamaru as Eric Lakes Adler
- Ryōta Takeuchi as Gordon Lakes Adler
- Mitsuki Saiga as Zandora Lakes Adler
- Kazuhiko Inoue as Johannes Lakes Adler
The previously announced cast of the anime includes:
- Yūma Uchida as Arnold Lakes Adler
- Kikunosuke Toya as Leonard Lakes Adler
- Manaka Iwami as Fine von Kleinert
- Maaya Uchida as Elna von Amsberg
- Kaede Hondo as Lynfia
Yūji Yanase, known for his work on By the Grace of the Gods, is directing the anime at Maho Film. Kazuyuki Fudeyasu is handling the series scripts, while Kazuko Tadano is designing the characters.
Tanba launched The Insipid Prince’s Furtive Grab for The Throne novel on the Shōsetsuka ni Narō website on February 3, 2019. The 15th volume shipped on August 29, 2025. Amagai then launched the manga adaptation on Kadokawa’s Young Ace Up website, and Kadokawa published the ninth manga volume on November 10, 2025.
Kadokawa publishes both the light novel and manga adaptation and describes the series as follows:
Arnold, the seventh Imperial Prince of the Adrasia Empire, is called “THE INSIPID PRINCE” among people since his twin brother is genius and respected by all people. However, he has a secret identity -SILVER, one of the only five -SS-rank adventurers in the continent. When his younger brother Leo decides to aim for the throne, Arnold starts running things behind the scenes to support his brother. Unexpectedly the most beautiful lady becomes his assistant. The secret struggle of the strongest prince begins!
