(Smart general + invincible + reasonable plot + no collapse of combat power)

After defeating Kabuto Yakushi and lifting all the Impure World Reincarnation of the Fourth Ninja World War, Itachi, who was burdened with countless darkness and contradictions, completely conveyed his will and love to Sasuke and left the ninja world without any regrets.

But just when Itachi thought that everything was over, he regained his 18-year-old body and came to the bottom of the Sabaody Archipelago in the pirate world!

"The Age of Discovery? Thousand Sunny?"

"You want to go to Fishman Island, 10,000 meters below? And find the end of the Grand Line?"

"You want me to be your companion?"

Luffy smiled and waved at Itachi: "This is truly a fate given to us by God, Tear Groove Man, you must be my partner."

Zoro: "Although I don't know this guy's origins, he is quite reliable."

Robin: "I am very interested in him. Maybe he is carrying a destiny that he himself does not even know about."

Akainu: "K-sou! Put a bounty on that man. Itachi Uchiha's head is worth at least 3 billion!"

Garp: "Hahahaha, I don't know where this guy came from, but the giant he summoned is really cool."