Epic Revenge Saga 'Backstabbed in a Backwater Dungeon' Anime Confirms October 3 Premiere, Unveils New Key Visual and Voice Cast

The highly anticipated anime adaptation of 'Backstabbed in a Backwater Dungeon: My Trusted Companions Tried to Kill Me, But Thanks to the Gift of an Unlimited Gacha I Got LVL 9999 Friends and Am Out For Revenge on My Former Party Members' is officially set to make its grand debut on October 3, 2025. Fans can mark their calendars for this thrilling fantasy series, which will air across Tokyo MX, MBS, and BS11 channels, bringing the acclaimed light novel to life on screens.

Penned by Shisui Meikyou with captivating illustrations by tef, the narrative plunges viewers into the world of Light, a protagonist whose trust is shattered when his own companions betray and abandon him. However, Light's fortunes dramatically shift thanks to a mysterious unlimited gacha, granting him the power to summon an army of formidable Level 9999 warriors. These loyal, immensely powerful allies pledge their unwavering allegiance to Light, empowering him to forge his own dominion within the depths of a secluded backwater dungeon. From this clandestine stronghold, Light meticulously plots his vengeance against those who wronged him, all while strategically planning his ascension back to the surface world. The anime promises a compelling blend of intense fantasy action, intricate strategic maneuvering, profound themes of betrayal, and a journey of remarkable personal growth.

New Visuals and Voice Cast Revealed

In a move set to heighten fan excitement, Bandai Namco Filmworks recently unveiled a stunning new key visual, offering a tantalizing glimpse into the series' aesthetic. Alongside this, the studio confirmed an impressive roster of voice talent joining the cast:

Hana Hishikawa as the enigmatic Nazuna, Shiori Izawa embodying the resolute Aoyuki, Ayumi Mano lending her voice to Ellie, Yūko Natsuyoshi as the intriguing Nemumu, and Katsuya Miyamoto taking on the role of Gold.

Exclusive Advance Screening Announced

For eager fans eager for an early peek, an exclusive advance screening of the first three episodes is slated for September 7 at the prestigious Shinjuku Piccadilly Cinema. This special event offers a unique opportunity to immerse oneself in Light's epic saga before its official broadcast.

'Backstabbed in a Backwater Dungeon' initially captivated readers as a web novel, launching on Shōsetsuka ni Narō in April 2020. Its burgeoning popularity led to its serialization as a light novel series, with Hobby Japan responsibly publishing the print volumes. The series has garnered significant praise for its intricate storyline, deeply developed characters, and inventive high-fantasy concepts, setting a high bar for its much-anticipated anime adaptation this fall season.