Reincarnated in One Piece (Dropped)

one day there was a boy named Alex Longlinus he is 18 years old he was an anime lover as he always watches one piece and other anime. his parents works overseas so he lives alone in a apartment. as he was watching the last one piece movie when the movie was over Alex said" aw man the movie is over what do I do now?" and then there was a message on his phone says "if you can reincarnate to a different world where do you want to go" Alex thinks about it and typed "One Piece World" and then another message comes out "what wish do you want" he typed " A system, an ability to eat more than 5 devil fruit, keep my memory, an ability to go to different worlds,I want to create my own unique zanpakuto" another message pop up "enjoy your adventure".