Kinzoku Slime wo Taoshimakutta Ore ga to Yobareru made: Ie no Niwa de Kyokushou Dungeon wo Mitsukemashita

One morning, a massive sinkhole suddenly tears open in the garden of an ordinary house. Inside the crater lies a strange, trembling creature—a slime with a solid metallic body. For Yuuma Mitaka, an unremarkable high school student, this bizarre discovery quickly becomes a daily routine. Every morning without fail, new metal slimes emerge from the depths of the hole, and Yuuma spends his days methodically exterminating them. As he continues this relentless cycle of hunting, Yuuma's physical form begins to undergo an astonishing evolution. However, the extraordinary power he develops comes with a dangerous catch. Whenever his ability activates, his appearance shifts into something terrifyingly monstrous, forcing him to conceal his newfound strength from everyone around him. He knows that if anyone were to witness what he has become, the consequences would be disastrous. Despite his best efforts to maintain a quiet life, Yuuma’s existence is far too anomalous to remain hidden forever. It is only a matter of time before the sheer scale of his transformation shakes the very foundations of the world. What begins as a mundane chore in a backyard crater soon spirals into an unprecedented fantasy epic where everyday life collides with unstoppable power.