Arc 15World and the Big Mom Pirates
Luo Chen joined the battle against Bundy World, defeated him, and spared him after Byojack intervened. He then rejected Big Mom’s invitation and escaped a battle with her forces in a superstorm, leaving the crew headed for Totto Land and Katakuri on his way to face Big Mom.
- World seized Marigold and Sonia to lure Hancock, while Hancock left Kuja to rescue them and Luo Chen boarded World’s ship.
- Luo Chen and Hancock overcame World’s officers, and Luo Chen rescued the sisters before fighting World.
- Luo Chen defeated World, but spared him when Byojack offered his own life, and World collapsed after his ship’s propulsion system exploded.
- The Marines credited Buggy with defeating World, while Luo Chen’s crew encountered Katakuri and rejected Big Mom’s tea-party invitation.
- Luo Chen declared war on Big Mom and fought Katakuri as Phil, George, Catherine, and the others battled Cracker and defended the Isel.
- The crew escaped the Big Mom Pirates as a hurricane formed, and Katakuri ordered his forces to retreat from the dangerous waters.
- Big Mom learned that Luo Chen had rejected her invitation and escaped, then summoned Katakuri to meet her when he returned.
- Luo Chen set course for Totto Land and urged Catherine to overcome her fear, while Katakuri went alone to face Big Mom.