A new key visual, trailer, main theme songs, and three more cast members have been revealed for the upcoming The Kept Man of the Princess Knight TV anime series. The anime will begin airing in Japan in January 2027.
The latest trailer showcases the opening theme “TRUE-TABOO” by MYTH & ROID. Additionally, the ending theme of the anime is “Gika” by sajou no hana.
The three new cast members for the series include Rie Takahashi as Vanessa, Tetsu Inada as Dez, and Rika Nagae as April.
They join a previously announced lead voice cast that has Junichi Suwabe as Matthew and Mikako Komatsu as Arwin.
Chihiro Kumano (Unnamed Memory assistant director) is directing the anime series, with Deko Akao (Unnamed Memory) as series composer and Hisao Ishii (16bit Sensation: Another Layer Episode 12 co-animation director) as character designer. BLADE is in charge of the animation production.
The fantasy light novel series is written by Toru Shirogane and illustrated by Saki Mashima. It was first published under Kadokawa’s Dengeki Bunko imprint on February 10, 2022 and has released seven volumes in Japan as of July 2026. It is known in Japanese as Himekishi-sama no Himo.
A manga adaptation drawn by Keyyang was released in August 2025.
Yen Press licensed The Kept Man of the Princess Knight light novels and manga for English release. It describes the synopsis of the light novel’s first volume as:
The Dungeon City is a wicked place filled with crime, debauchery, and death. Its one shining light is Arwin, the beautiful Crimson Princess Knight. She and her brave party of adventurers descend into the dungeon at the city’s center, seeking a legendary treasure with the power to rebuild the princess’s fallen kingdom. Many yearn to be by her side, but that spot is already taken by Matthew, a man despised by all in town as a cowardly weakling. Everyone thinks he is scum who just spends her hard-earned money on booze, women, and gambling. No one in the city — not even the princess knight — knows what Matthew is truly capable of
Sources: The Kept Man of the Princess Knight Official X/Twitter (2) (3) (4), official anime website (2) (3), Crunchyroll News
