Curse King

Curse King is one of Sailor Piece's most accessible and surprisingly rewarding bosses, spawning automatically at Shibuya Station in Sea 1 every 5 minutes. Its 5 million HP is trivially low compared to almost every other named boss in the game, which means even early-progress players can participate and claim full rewards — making it a cornerstone farming target for anyone still building out their character.

The drop list is unusually wide and utility-dense. Haki Color Reroll at 60% and Race Reroll at 40% are essentially semi-regular, while Trait Reroll (32.5%), Boss Ticket (30%), and Malevolent Key (30%) mean nearly every kill produces multiple immediately useful items. Cursed Finger (20%) and Dungeon Key (20%) add further progression value. Further down, Dismantle Fang sits at 8%; the Cursed King Collar Accessory and the Curse King Title both drop at 4%, which is generous for cosmetics. The Crimson Heart at 2.5% is the table's rarest item.

Because Curse King respawns every five minutes and requires zero summon items, the optimal strategy is simple: stay at Shibuya Station and cycle kills continuously. Stack up rerolls and Malevolent Keys efficiently without spending any resources — few bosses in Sea 1 offer this volume of useful drops for essentially no investment.