Cheat Eater Isekai Shoukan Kotogotoku Horobubeshi

It begins with a familiar premise: a human soul, freshly severed from life, is intercepted by a goddess who offers an extraordinary bargain. She transports the departed to a world of her own making, gifting them abilities so overwhelmingly powerful they border on divine cheats. In exchange, she asks only that they use this immense strength to protect her creation from ruin. Yet, as history has proven time and again, absolute power corrupts absolutely. Instead of acting as saviors, the summoned heroes inevitably succumb to their darkest impulses, wielding their demigod-like gifts for selfish greed and senseless violence. Zyzz knows this devastation firsthand. He serves as a slave to one such corrupted otherworlder, having willingly submitted to servitude in a desperate bid to locate his missing sister. His bleak existence takes a dramatic turn when he crosses paths with Kaina, a woman who identifies herself as the "final summon." Hand-selected by the very goddess who started it all, Kaina carries a singular, unforgiving mandate: to hunt down and execute every summoned hero who has betrayed their sacred oath. Together, they are thrust into a perilous crusade against the very saviors who were meant to protect the world.