After waking up in a mysterious fantasy realm governed by RPG game mechanics, ordinary boy Aikawa Kanami finds himself trapped in a colossal death maze known as the Dungeon. With a blend of resilience, wit, and newfound magical abilities, he strives to return to his ailing sister on Earth. To uncover a path home, Kanami sets his sights on conquering the Dungeon's rumored final level, promising any wish to the victor. Through clever manipulation, Kanami forms a pragmatic alliance with a magic-proficient but swordplay-challenged companion. However, their resolve is tested when an unexpected boss battle looms ahead. Witness Kanami's determination and resourcefulness in the face of adversity in the debut installment of this enduring and beloved series.