Other

The protagonist is reborn into the world of Naruto, becoming Naruto himself.
    As an infant, due to the influence of the Hiraishin no Jutsu (Flying Thunder God Technique) and Kamui (Divine Might) phasing effect, he witnesses the space between dimensions torn apart—revealing a portal to the world of One Piece.
    From the rift, he acquires a Devil Fruit: the Doa Doa no Mi (Door-Door Fruit).
    Inside his consciousness, the Gate of Worlds opens.
    He secretly plunders knowledge throughout Konoha before stepping into the One Piece world, where he trains in Busoshoku Haki (Armament Haki), Kenbunshoku Haki (Observation Haki), Haoshoku Haki (Conqueror’s Haki), and the Rokushiki (Six Powers) of the Marines.
    When he returns to Konoha, the golden-haired boy possesses a body of steel and unmatched combat prowess.
    He punches through the Hokage Building, kicks apart the Root Division.
    “So you’re the Fourth Raikage, huh? Come on, let’s compare our Busoshoku Haki!”
    “Tsunade-neesan, come, let’s arm-wrestle!”
    “Mei-san, let me give you a passionate kiss!”
    [Raw: 木叶：我鸣人双穿海贼]