One Piece: the Strongest Summon

After traveling through One Piece, Roja became a marine. While he disliked pirates, he also hated the Celestial Dragons even more. It has the most powerful summoning system, which can summon characters from all dimensions and gain access to their abilities. "Come on, esper! Let's fight on the sea and let you see what water release ninjutsu is." "Saber, use the holy sword to cut off Doflamingo's line, yes, that's it." "Boss Madara, I'm asking you to fight Whitebeard, but I'm not asking you to demolish the Navy Headquarters." This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.