Another Purpose is a Naruto/One Piece fanfiction by Lolrrb46 on Wattpad.
After he tells Sasuke about the real reason as to why he committed the Uchiha Massacre and his undercover mission within the Akatsuki, Itachi dies with a smile on his face, expecting to pass onto the afterlife. However, fate has other plans for him as he is transported into the world of One Piece, where he has a chance to make his mark on the Grand Line as a free agent and eventually as a member of the Straw Hats.
Tropes featured in Another Purpose include:
- Adaptational Superpower Change: Blackbeard gets the Magma-Magma Fruit instead of the Tremor-Tremor Fruit at Marineford.
- Adaptational Villainy: As if Spandam wasn't a horrible enough excuse of a person, here he tries to rape Nico Robin at the Bridge of Hesitation just because he could.
- Attempted Rape: Played for Drama when Spandam attempts to rape Robin For the Evulz.
- Asshole Victim: Ain't nobody gonna mourn the deaths of Spandam and Akainu at Itachi's hands given their reputations in canon.
- An Arm and a Leg: Itachi gets one of his arms melted off by Akainu's magma punch after he blocks it from reaching Ace.
- Curb-Stomp Battle: Akainu is utterly outclassed by Itachi in their battle at Marineford, getting himself trapped within Itachi's genjutsu before he is knocked out by a seismic punch from Whitebeard and subsequently decapitated.
- Death by Adaptation: A few to go around:
- Spandam gets the comeuppance he very much deserves by having his mind shattered by Itachi's Tsukiyomi before he is subject to a Neck Snap that ends his life.
- Akainu is decapitated by Itachi's Haki-embued sword at the Battle of Marineford after being subject to a Curb-Stomp Battle at his hands.
- Handicapped Badass: Itachi's still a force to be reckoned with even after losing his arm to Akainu at Marineford, as his fight against the admiral shows.
- Spared by the Adaptation: Ace survives the War of the Best thanks to Itachi Taking the Bullet for him when Akainu attempted to kill Luffy.