Simultaneous Transmigration: I Can Summon Myself

In One Piece, he simultaneously transmigrates across the Myriad Worlds. He can summon his deceased selves to fight. Naruto's Uchiha Rein: "You want to dance too?" The Legend of the Seven Swordsmen's Rainbow Cat and Blue Rabbit's Rein: "Please call me Young Hero Orange Cat!" Jujutsu Rein: "There wasn't even a moment to mourn Saturn's death. The one who rushed straight to the battlefield was... Black Flash!" Blazing Thunder Rein: "The moon is full tonight. Thunderous Crescent Slash!" Kaleido Rein: "O key that conceals the power of darkness..." Rein: "Warring States, I'll be the marshal. Who's in favor? Who's opposed?"