The Dengeki Bunko Autumn Festival Online 2026 livestream event today unveiled a brand-new trailer and key visual for The Kept Man of the Princess Knight anime before its January 2027 broadcast, along with three cast additions. Furthermore, MYTH & ROID ( Saga of Tanya the Evil OP) will perform "TRUE-TABOO" for the fantasy series' opening theme song, and sajou no hana ( The Warrior Princess and the Barbaric King ED) will perform "Gika" for the ending theme song. The former is previewed in the trailer below. The Kept Man of the Princess Knight Anime Main Trailer The Kept Man of the Princess Knight Anime Key Visual Joining Junichi Suwabe (Matthew) and Mikako Komatsu (Arwin), the new cast additions are as follows: Vanessa voiced by Rie Takahashi (Megumin in KONOSUBA -An Explosion on This Wonderful World! ) Dez voiced by Tetsu Inada (Endeavor in My Hero Academia ) April voiced by Rika Nagae (Makina in Alma-chan Wants to Be a Family! ) Vanessa Dez April Chihiro Kumano ( The Angel Next Door Spoils Me Rotten Season 2 ) directs The Kept Man of the Princess Knight anime at studio BLADE, with Deko Akao ( May I Ask for One Final Thing? ) handing series composition, Hisao Ishii providing the character designs and Taku Iwasaki ( Bungo Stray Dogs ) composing the music.