Pirate: Just Out of the East China Sea, Let Me, the Four Emperors, Counterattack?

Chen Chen traveled to the world of pirates and just left the Novice Village in the East China Sea when the sweet voice of the system sounded in his mind. "At fifty years old, you are replaced as the Yonko by Bucky the Clown." "As a remnant of the old era, you are determined to let this group of young people in the new era know what the last remaining power is." Mission: [The Last Dance] As long as you defeat any plot character, you can randomly obtain one of the opponent's skills. And the skills mutate and become more powerful. … Chen Chen's eyes lit up when he looked at Luffy, who didn't know how to use second gear, and Zoro, who didn't even know how to use Haki. … Zhan Momomaru: [Navy Sixth Form] Chen Chen upgrades: [Return of life] Zhan Taomaru, who was knocked to the ground and seriously injured, looked at the green light that healed him: What kind of magical skill is this? Fire Fist Ace: [Fire Ring·Cross Pillar] Chen Chen brought the skill and mutated it directly: [Sacred Fire·Great Flame Emperor] Looking at his injured body swallowed up by the flames, Ace trembled: How is it possible? I am the owner of the Burning Fruit. Any flame that can hurt me must be my illusion! Kaido of the Hundred Beasts: [Thunder Gossip] Chen Chen jumped up and summoned [World-Destroying Sky Thunder] Looking at the lightning in the sky that could kill him, Kaido trembled all over and his eyes were dull: With this method of summoning thunder, are you the dragon or am I the dragon? … Chen Chen, a remnant of the old era. I thought the new era would be his last dance. But unexpectedly, when I finally look back at this era, Unexpectedly, There isn't even one who can fight!