One Piece: A Certain Unscientific Fourth Admiral

【This book is the second half of Marines: From Marine Admiral to Emperor of the Sea, but you can still enjoy it on its own】 【The protagonist is a Marine who kills pirates, regardless of their popularity】 “Fleet Admiral Sengoku, Marine Admirals have their limits!” “In my brief dozen or so years serving in the Marines, I've come to understand one thing.” “The higher you rise in the Marines, the more clearly you feel the existence of those limits and restraints.” “We have to become something that stands above the Marine system!” Fleet Admiral Sengoku glared at the fourth admiral he had personally promoted, his face twisted with anger. “What exactly are you trying to say?” Avista Luo Lin spread his arms. Behind him stood countless Marines who had risen up alongside him. “We're done being the Celestial Dragons' dogs, Sengoku!” “We'll uphold true justice and cleanse these seas!” “Sengoku, let's celebrate the Marines' rebirth with the blood of the Celestial Dragons!” Avista Luo Lin, who transmigrated into the world of Pirate King, has a dream: to rewrite this world into a story that belongs to him alone. To make that dream come true, he must first lead the Marines out of the World Government, punch the Celestial Dragons' madhouse in the face, kick the Four Emperors' cram school, and purge every obstacle in his path!