One Piece: The Immortal Silver King

He woke up plummeting from the sky, destined for a watery grave in the Grand Line. An ordinary Earthling, dumped into the treacherous, power-filled world of One Piece, utterly vulnerable and utterly lost. But then the legendary Sword of Damocles manifested above him, imbuing him with the absolute, immutable power of the Silver King: true immortality, limitless flight, and impenetrable barriers! Before he could even process his new reality, he crashed directly onto Roger Pirates' private island, caught between the future Pirate King, Dark King Rayleigh, and a young Shanks. Now, a fragile \"intern\" forced to train with the strongest crew in history, he must quickly master his terrifying, unique abilities. His goal is simple: live freely. But what happens when an 'unchanging' power meets a world constantly striving for change and ultimate freedom? And what terrifying truth lies beneath his newfound, seemingly perfect immortality?