I've decided to drop this fanfic, as it turns out another translator had already started working on it a month before I did. Out of respect for their earlier efforts and to avoid duplication, I'll be stepping back from this project. I apologize for any inconvenience this may cause and truly appreciate the support and interest you've shown. Thank you for your understanding.
The fanfic is titled One Piece: Luffy is My Pokemon by Cosmic_2, it's already at chapter 94, and is ongoing.