Matt Schley
April 17, 2025 
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 (deep breath) is a light novel series by Shisui Meikyou about, well, see the above title.
The light novel series is getting an anime adaptation, and while we first learned about it back last November, now we’ve got some more details, including a promo video.
We also know who’s set to play the leads: Nina Tamaki as Light and Ikumi Hasegawa as Mei.
Here’s the staff behind the series:
Director: Katsushi Sakurabi (Flying Witch)
Scripts: Hiroshi Ohnogi (FMA Brotherhood)
Character designer: Yukie Suzuki (Tsukimichi)
Music: Ryo Takahashi (High Card)
Sound director: Yoshikazu Iwanami (Ajin)
The series is animated at J.C. Staff. It’ll go on air this fall.
Here’s how J-Novel Club, which releases the series in English, describes it:
When Light is kicked out of the Concord of the Tribes, his former comrades instantly turn on him. Light escapes this diabolical act of betrayal by the skin of his teeth…only to find himself in the deepest part of the Abyss, the most dangerous dungeon in the realm! To avoid being eaten by carnivorous monsters, he uses the Unlimited Gacha, his sole magical skill. But where it previously only produced junk items, this time Mei—a gorgeous Level 9999 fighter in a maid outfit—springs forth!
Fast forward three years and Light has carved out his own kingdom in this backwater dungeon, summoning more beautiful Level 9999 warriors who swear absolute fealty to him. Now a powerful Level 9999 Overlord himself, Light plans to ascend to the surface and take revenge on his betrayers one by one!
The manga adaptation by Takashi Ohmae is being published in English by Seven Seas Entertainment.
Source: ANN
