Hobby Japan has announced that the Shinjiteita Nakama-tachi ni Dungeon Okuchi de Korosarekaketa ga Gift “Mugen Gacha” de Level 9999 no Nakama-tachi o Te ni Irete Moto Party Member to Sekai ni Fukushuu & “Zamaa!” Shimasu! (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) light novel series by Meikyou Shisui and tef has been green-lit for an anime adaptation in 2025. The news was confirmed in a video commemorating Hobby Japan Novel’s 10th anniversary.
[https://www.youtube.com/watch?v=rbpiTH2O7Bc]
Meikyou started the story in April 2020 on the Shousetsuka ni Narou website, and Hobby Japan published the first novel in May 2021, with illustrations by tef. The 11th novel in the series will be released on November 19th, 2024. J-Novel Club publishes the novel series in English under the title 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 and the World, and it will release the ninth novel on December 19th, 2024.
The novel series inspired a manga adaptation by Oomae Takashi, which was published in May 2021 on Kodansha’s Magazine Pocket website. Kodansha published the manga’s first tankoubon volume in August 2021 and the 14th volume on November 8th, 2024. Seven Seas publishes the manga in English under the title Backstabbed in a Backwater Dungeon: My Party Tried to Kill Me, But Thanks to an Infinite Gacha I Got LVL 9999 Friends and Am Out For Revenge, and it will release the manga’s seventh volume on December 17th, 2024.
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!
