Fushi no Dungeon Master - Uragirare Suterareta Teihen Boukensha ga Moto Nakama no Onna Boukensha-tachi ni Wakarase Fukushuu wo Chikaimasu!

Deep Emerald is a prestigious, all-female adventurer party ranked at the elite A-tier, renowned for both their striking beauty and formidable combat prowess. Galen, a young man who dreams of the adventurer's life but lacks any magical ability, struggles at the very bottom of the profession. Burdened by the massive debts left behind by his deceased best friend, he accepts a grueling role as Deep Emerald’s errand boy and frontline vanguard, risking his life daily just to make ends meet. However, everything Galen believed was a carefully constructed lie. He eventually discovers that both his closest companion's tragic death and the insurmountable debt were part of a calculated scheme orchestrated against him. Stripped of his trust and discarded as useless, Galen is abandoned deep within a treacherous dungeon. Plunging into its lowest depths, he hovers on the brink of death, betrayed by those he sought to serve. Yet, in his final fading moments, fate intervenes. Instead of perishing in the darkness, Galen unexpectedly inherits the power to command monsters. Rising from the abyss not as a powerless outcast, but as the absolute ruler of the labyrinth—the Dungeon Master—he now possesses the means to exact his vengeance.