The man renowned as Japan’s greatest swordsman found himself guided by a mysterious voice echoing in his mind on his deathbed. This mysterious entity led him to acquire the body of a young elf boy named Hercules, who had lost the will to live. Taking on the name of the young Elf, Hercules, he embarks on a second life in another world. However, in this new world, the concepts of “levels”, “stats” and “skills” stand as formidable barriers. With his loyal partner, a tiger-shaped magical beast named Toramaru, he embarks on a journey to overcome each of these challenges one by one.