My Brother in One Piece Is Luffy

Reborn in the world of pirates, he became Luffy's twin brother with a golden finger named "Anime System". Why do you have blood inheritance limits? Or the Byakugan, one of the three major pupil techniques? Amazing? Isn't it just a kind of blood inheritance limit? I lack everything, but I don't have any blood vessels, Sharingan, Byakugan, Rinnegan, Wood Release, Ice Release, or Dust Release. Do you still want to compete with us? "We have all the abilities in Bleach, Naruto, One Piece, Fairy Tail... What is your dream? To become the strongest person and help Luffy become the Pirate King. This book allows you to see a different Luffy and a different Straw Hat Gang. This story and characters are purely fictitious. Any similarities are purely coincidental and should not be imitated. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.