The Kept Man of the Princess Knight TV anime's promotional video reveals Myth & Roid's opening theme, performed by Rie Takahashi, Tetsu Inada, and Rika Nagae. The anime, directed by Chihiro Kumano and based on Toru Shirogane's light novel series, will debut in January 2027. The story follows Arwin, a beautiful Crimson Princess Knight, and her brave party of adventurers as they descend into the dungeon city to seek a legendary treasure. The video also showcases the ending theme song "Gika" by sajou no hana and introduces new cast members, including Junichi Suwabe as Matthew and Mikako Komatsu as Arwin. The anime's staff includes Hisao Ishii for character design, Deko Akao for series scripts, and Taku Iwasaki for music. Yen Press publishes the novels in English, and Kadokawa launched a manga adaptation, with Yen Press also publishing it in English.
