My Gift Lvl 9999 Unlimited Gacha: Backstabbed in a Backwater Dungeon, I'm Out for Revenge!

Light gets betrayed by his entire party and dumped into the deepest floor of the most dangerous dungeon in existence. Classic Tuesday for an isekai protagonist, right? Except Light isn't some overpowered hero — he's got one skill called Unlimited Gacha that, up until now, has only ever spit out garbage items. Think lootbox mechanics but as your entire combat system. Desperate and surrounded by monsters that should absolutely kill him, he rolls the gacha one more time and out pops Mei, a Level 9999 maid warrior who can obliterate basically anything. From there, Light starts building an army of absurdly powerful gacha-summoned allies from the depths of the Abyss, all while plotting revenge against the former comrades who tried to murder him. The whole thing runs on that satisfying "you messed with the wrong person" energy where every confrontation is Light showing up stronger than anyone expected. J.C.Staff handles the animation across 12 episodes, adapting the light novel with solid action sequences and a dungeon setting that actually feels threatening. If you liked the revenge arc in The Rising of the Shield Hero or the way Overlord lets its protagonist steamroll people with overwhelming power, this hits a similar nerve. Fans of Arifureta will also recognize the "left for dead in a dungeon, came back stronger" setup. It's not reinventing the genre, but the gacha power system keeps the summoning unpredictable enough to stay interesting.