One Piece: The Fourth Plague of Beasts? I am the Moon Demon!

Journeying through the world of pirates, Raynor joyfully acquires the power of the Blue Curse, becoming the fourth leader of the Beasts Pirates and earning the nickname "Moon Scourge." He'd hoped to relax and enjoy himself, but he saw the people of Oni Island in dire straits and the beasts infamous. This wouldn't work. Once the protagonist, Luffy, arrives, Kaido will be finished, and so will he! Thus, Rune's style shifts dramatically: using gravity to move mountains, reclaim the sea, and build new cities, while using an iron fist and wisdom to restore order and benefit the people. Did Quinn become a public welfare scientist? Did Jin find a new faith? Did Yamato learn to govern? Until one day, the liberated islands cried out in unison, "Thank you, Lord Moon Scourge! You are Nika, the bringer of dawn and freedom!" Raynor, in the middle of a drinking contest with Kaido, suddenly trembled: "Wait a minute! I came here to enjoy myself, how did I become a revolutionary lamp... No, Nika?