Prepare to have the Grand Line turned upside down! *One Piece: Creating Avatars Start With Ryomen Sukuna* dares to ask: what if someone could summon legendary avatars, rewriting the fate of the world's most powerful pirates? This fanfiction plunges into that thrilling possibility, delivering a unique spin on the beloved *One Piece* universe. We follow Kai, an individual blessed (or cursed) with the ability to manifest avatars of incredible strength. Forget ordinary power-ups; Kai's potential is limitless, capable of summoning legendary figures to fight by his side. His first choice from the avatar mall? None other than Ryomen Sukuna, the fearsome King of Curses. Sukuna's arrival sends seismic waves through the established pirate hierarchy, challenging the authority of even the Four Emperors. But he's not alone. Iconic figures like the manipulative Hunter Hisoka and the unparalleled swordswoman Yachiru Unohana Retsu join the fray, each adding their own brand of unpredictable chaos to the high seas. Even a Marine Admiral, armed with the ludicrously powerful "Ultimate Hellfire Burst Wave Motion Cannon," rises to meet this unprecedented threat. Imagine Usopp's legendary cowardice magnified tenfold, Katakuri struggling to predict Hisoka's every move, and Shanks forced to re-evaluate his place in a world spiraling into madness. How will the balance of power shift as familiar faces collide with these overwhelming new forces? Prepare to witness the rise of an Uncrowned King, and the delightful pandemonium that follows in his wake.