In the narrow alleyways of the slums, a hungry young boy struggled with his harsh life. “Huh? I’ve been reincarnated.” The impact of a blow brought back memories of his past life. While excited about being reincarnated into another world, the current situation was far from favorable. “Do I follow the conventional path and aim for success as an adventurer, or…” For some reason, the boy decided to rise to power in the other world from the shadows of the underworld. “Mafia bosses and gang leaders are so cool!” This is the story of a boy reincarnated into another world, bestowed with a unique ability, as he, along with his companions, dominates the other world from the underworld.