Beo, a man who reincarnated into the Pirate King World, spent nine years on Duramos Island in the New World after being raised by the old town mayor Kike. He naturally awakened Observation Haki. While fishing one day in Marine Year 1492, he read a newspaper and discovered that the Roger Pirates had appeared at the port of Duramos Island. Seizing the opportunity to board the future Pirate King's ship, he rushed home, left a note for the old mayor saying he was off to conquer the world, and headed to the dock.At the port, the Roger Pirates under Gol D. Roger were resupplying. Beo saw the young Shanks and Buggy and greeted them familiarly, which puzzled Buggy. Roger and Vice-Captain Silvers Rayleigh noticed Beo's awakened Observation Haki, which seemed like a special mutated type. Roger asked the boy why he wanted to join. Beo declared he wanted to turn the world upside down and see the scenery at the end of the sea. Impressed, Roger accepted him onto the crew.Before boarding, crew member Tobio blocked Beo and demanded he prove his skill. Beo used his Observation Haki to precisely touch Tobio's belt, then dodged all of Tobio's attacks without being touched. Tobio admitted defeat, and Beo officially became a cadet crew member. As the Oro Jackson sailed away, the old mayor, revealed to be a former member of the Rocks Pirates, furiously cursed Roger.On the ship, Beo bonded with Shanks and Buggy. He quickly became friends with the crew, using his Observation Haki to find hidden alcohol and predict Rayleigh's inspections. Rayleigh began training the three cadets in physical combat and Haki. Buggy chose throwing darts and daggers, Shanks chose a longsword, and Beo selected a flintlock pistol. Beo explained his choice: the swordsmanship path was too competitive, while the marksman path suited his Observation Haki talent for accuracy and trajectory prediction. He also asked Rayleigh to teach him Conqueror's Haki Coating, but Rayleigh said he must first awaken Conqueror's Haki.During training, Beo demonstrated his monstrous Observation Haki by perfectly replicating Shanks' sword techniques after watching him once, even correcting a subtle flaw. Peter Mu, the ship's sniper, noted his ability. Rayleigh realized he had underestimated the boy's talent.Two months passed. After another celebration feast, Beo, Shanks, and Buggy were left to clean up. Beo's Observation Haki detected a cannonball flying toward the ship from a distant Marine warship. He shot at it but the cannonball, infused with Armament Haki, deflected his bullet. Roger then unleashed a slash named "God's Wrath," which tore the sky and destroyed multiple cannonballs. The Marine ship was commanded by Monkey D. Garp, who began shouting at Roger. The Roger Pirates prepared for battle. Beo climbed the crow's nest to join Peter Mu. He aimed at a Vice Admiral on the warship who was casually playing with a cannonball, realizing that the cannonball that had troubled him came from that man. Garp's voice boomed through a loudspeaker, demanding surrender. Roger laughed and refused. The two old rivals exchanged words across the ocean, then the usual chase and Haki clash began. The Roger Pirates, all elites, avoided a prolonged confrontation with Garp. Some Marines tried to approach using Moonwalk but were intercepted by Rayleigh or shot down by Beo. The text ends during this encounter.