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
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 — Quick Overview
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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 (信じていた仲間達にダンジョン奥地で殺されかけたがギフト『無限ガチャ』でレベル9999の仲間達を手に入れて元パーティーメンバーと世界に復讐&『ざまぁ!』します!) is a high-octane dark fantasy revenge manga written by MEIKYOU Shisui and illustrated by OOMAE Takafumi, published by K Manga, Kodansha. Read chapters in English online as the exiled human youth Light awakens his dormant Unlimited Gacha gift to summon unstoppable Level 9999 allies and execute retribution against his treasonous comrades.
| Author / Story : MEIKYOU Shisui | Format & Status : Manga · Ongoing |
| Artist / Art : OOMAE Takafumi | Original Publisher : K Manga, Kodansha |
Series Specifications (Year, Genres, Origin...)View all details ↓
| Release Year : 2021 | Demographic : Shounen |
| Country of Origin : Manga | Reading Style : Right to Left |
| Primary Genres : Action, Adventure, Drama, Fantasy, Harem | |
| Core System / Theme : Unlimited Gacha Summoning / Dark Fantasy Dungeon Revenge | |
Other Names & Verified AliasesView all
Full Synopsis & Narrative BreakdownRead story
In a world where humanoid races look down on baseline humanity, young adventurer Light serves as a baggage carrier for the renowned adventurer party known as the Concord of the Tribes. Believing he had found true comrades across racial boundaries, Light dedicates his life to supporting their expeditions into the Abyss, the deadliest labyrinth on the continent. However, during a deep expedition, his supposed allies—including the calculating elf mage Sasha—reveal their true colors. Deeming humans inferior and viewing Light as an embarrassment, the party ambushes him and casts him into the unexplored depths of the Abyss to be torn apart by high-tier apex monsters.
Facing imminent death, Light expends his remaining mana on his sole innate skill, "Unlimited Gacha," which previously produced only useless trash items. In the lethal density of the Abyss, the skill unlocks its true mechanism, summoning Mei, a battle maid bearing an astronomical Level 9999 stat profile who obliterates the surrounding monsters with ease. Over the next three years, Light methodically transforms the subterranean depths into an impregnable stronghold, summoning an army of Level 9999 specialists including warriors, sorcerers, and covert scouts. Reborn as an unstoppable dungeon overlord, Light initiates a calculated campaign to surface, track down each treacherous member of the Concord of the Tribes, and dismantle their arrogant racial hierarchy piece by piece.
What to Expect
The narrative delivers an unapologetic power fantasy centered on overwhelming tactical supremacy, methodical retribution, and kingdom-building within an untamed subterranean ecology. Combat showcases vast level disparities where the protagonist never hesitates or shows unearned mercy, systematically dismantling corrupt aristocratic circles and elite adventurer factions. Beyond sheer brute force, the series explores logistics, intelligence networks, and strategic territory expansion, offering a fast-paced reading experience punctuated by dramatic confrontations and lavish magical clashes.
Who Will Enjoy This
This manga is tailored for readers seeking relentless revenge narratives, overpowered protagonist dynamics, and gamified summoning progression similar to dark fantasy hits like Failure Frame, Arifureta, and The Rising of the Shield Hero.
Thematic Recommendations
Readers fascinated by extensive world-building, high-seas exploration, and an unyielding crew standing united against a corrupt global establishment should explore One Piece, which shares themes of found loyalty conquering overwhelming odds. For fans drawn to cutthroat cultivation politics, ruthless retribution against traitorous factions, and rapid power elevation through hidden ancient methods, Apotheosis provides a parallel martial arts revenge saga where the protagonist rises from disgraced slave to cosmic combatant.
Key Early Characters (Light, Mei, Aoyuki, Sasha)View cast
| Light Protagonist |
A kind-hearted human carrier betrayed and dropped into the Abyss by his party. His awakened skill, Unlimited Gacha, allows him to summon transcendent Level 9999 companions. Hardened by betrayal, he becomes a cold, strategic commander determined to bring down the races that discard humans. |
| Mei First Summon / Maid |
The very first Level 9999 entity summoned from Light's unlocked gacha in the Abyss. Dressed in elegant maid attire, she wields colossal physical strength and lethal martial prowess, displaying absolute devotion to Light while managing the internal affairs of his subterranean domain. |
| Aoyuki Level 9999 Retainer |
A high-ranking combatant summoned by the Unlimited Gacha system to fortify Light's inner court. Specializing in reconnaissance, high-mobility combat, and sensory tracking, she provides crucial support during their methodical covert strikes on surface factions. |
| Sasha Primary Betrayer / Elf Mage |
A member of the Concord of the Tribes who outwardly feigned camaraderie toward Light while secretly harboring deep racial contempt. Her calculated betrayal instigates Light's abandonment, making her one of the foremost targets of his coming vengeance. |
Frequently Asked Questions3 Answers
What is the core power system behind Light's Unlimited Gacha?
Light possesses the innate Gift known as Unlimited Gacha. While it originally summoned low-grade junk items on the surface, exposure to the high mana density of the Abyss unlocked its true potential, allowing him to pull max-level Level 9999 fighters, maids, and divine equipment that completely eclipse ordinary mortal power caps.
Does Backstabbed in a Backwater Dungeon have an anime adaptation?
Yes, an anime television series produced by studio J.C.Staff premiered in late 2025 under director Katsushi Sakurabi. Viewers transitioning from the anime to the manga can pick up the storyline around Chapter 36 to Chapter 38 to continue following Light's ongoing revenge against surface kingdoms seamlessly.
What is the publication schedule and status of the manga?
The manga remains actively ongoing with regular chapter releases serialized through Kodansha's digital platform Magazine Pocket and localized digitally on K Manga. Readers can track all published chapters, side specials, and volume release milestones in our updated 2026 digital archive.