I'm the Great Pirate, and I'm waging the Holy Grail War!

Dilt, a living fossil of the One Piece world, a legend on par with Roger and Whitebeard. When he reached the pinnacle of the world, only endless boredom remained... a "blind" system, half a century late, bound to him. "Congratulations, host, on your transmigration to the Type-Moon world! Please oversee a Holy Grail War!" Dilt looked at the muscle-bound world before him and laughed: "Tell me... what kind of world is this?" Since absurdity has come knocking, let's go big! Seven Riders versus one is too small-scale? Double it up, 14 vs 14! Heroic Spirit Summoning? Does Roger count too? Akainu, your magma isn't hot enough, nor powerful enough! Ace conjures a magic circle, and the golden-armored spear god Karna descends in a spectacular fashion! Jeanne d'Arc, the Arbiter, provides thoughtful assistance? "Master, you're actually an angel, aren't you?" The ambitious Blackbeard secretly spies? "Hehehe... the Holy Grail, this power is mine!" A Celestial Dragon meets Gilgamesh? "A foolish and vile bastard dares to call himself a god?" In an instant, the Red Line was reduced to ashes. As the rainbow light of the Holy Grail tore through the sea, as Heroic Spirits clashed with the heroes of the era... Dilt sat atop a cloud, his wings fluttering, overlooking the ultimate carnival he had unleashed, sweeping across the world. "Ku... this boring era is finally getting interesting! System, watch closely—on this vast ocean, who is the uncrowned king!" [One Piece power ceiling + entertainer + hardcore clash of the Type-Moon Holy Grail War!] Keywords: Doing whatever you want, flipping tables, big shots pulling stunts, making up for regrets, Fate Heroic Spirit summoning, world brawl!