In a world where dungeons have emerged, adventurer Shota is mocked as the "weakest Slime (only) hunter." However, through sheer persistence, he slowly maxed out his seemingly useless "Luck" stat. Eventually, his relentless effort paid off when he “luckily” discovered and defeated a rainbow-colored slime that didn’t even exist in any monster encyclopedia! In a stroke of “coincidence,” Shota obtained a rare skill called **Level Gacha**, which allows him to spin a gacha in exchange for levels. Though his actual level remains low, his stats keep skyrocketing thanks to the powerful items and abilities he earns through his spins. Shota’s unstoppable rise begins as his extraordinary luck leads him to mysterious creatures and peculiar skills. Get ready for his thrilling and lucky adventure!