One Piece: Awakening the Tremor-Tremor Fruit and Crushing the Four Emperors

Lei Jin transmigrates into the world of Pirate King, awakening the Tremor-Tremor Fruit from the start and binding himself to the Myriad Worlds Pirate System. Near the coast of East Blue, he crushes a ragtag pirate crew preying on merchant ships. He encounters Luffy in Foosha Village and witnesses the fiery moment Luffy sets sail. After meeting Zoro, he has a brief sparring match and earns Zoro's respect for his strength. Lei Jin then takes a System mission to defeat East Blue's tyrant, the Krieg Pirates. With the power of the Tremor-Tremor Fruit, he overwhelms Gin the Demon Man and crushes Krieg, recruiting a group of loyal followers and forming the Tremor Thunder Pirates. Along the way, he foils an encirclement by the Marines' East Blue branch, awakens Conqueror's Haki, and develops the Tremor-Tremor Fruit to an intermediate level, becoming the undisputed “Tyrant of East Blue.” At last, Lei Jin leads the Tremor Thunder Pirates toward the Grand Line, beginning a new chapter in his quest to conquer the seas.