The popular light novel ‘Mugen Gacha’ by Meikyou Shisui and illustrator tef. is finally getting an anime adaptation.
Titled ‘Backstabbed in a Backwater Dungeon’, the series will premiere in October 2025, animated by renowned studio J.C. Staff, best known for hits like ‘One Punch Man’ Season 2 and ‘Toradora!’.
Plot: Infinite Gacha and the Rise of a Dungeon Survivor
The story follows a weak boy betrayed by his adventuring party and left to die in a forgotten dungeon. But fate intervenes. He gains access to the “Infinite Gacha” skill—a mysterious power that lets him summon items, weapons, and most notably, a harem of Level 9999 girls to aid his quest for revenge.
In a world where betrayal runs deep, this new ability changes everything. The boy transforms from prey to predator, building an unstoppable force to face his enemies and rewrite his destiny.
"Backstabbed in a Backwater Dungeon" TV ANIME NEW VISUAL REVEAL!
Air Date: Oct 2025
Animation Studio: J. C. StaffRevenge Fantasy about a weak boy who is left behind to die in a dungeon by his adventurer party. To survive he gets his hand on the "Infinite Gacha" skill which… pic.twitter.com/Uzx8Kq7n3B
— Manga Mogura RE (Anime & Manga News) (@MangaMoguraRE) August 1, 2025
“Sometimes, revenge is just another name for survival,” says a voiceover from the teaser, hinting at intense themes and emotional depth.
Why Fans Are Buzzing About ‘Backstabbed in a Backwater Dungeon’
Anime fans love a good revenge arc, and this series mixes dark fantasy with satisfying comeuppance. The new visual shows our protagonist clad in dungeon-worn robes, eyes glowing with determination, flanked by high-level allies with magical weaponry.
With J.C. Staff at the helm, expectations are high for both animation quality and emotional payoff.
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