One Piece: The Ultimate Strawhats.

A martial artists (real not those wuxia types) reincarnates in One Piece but all his memories about the show get erased due to his impertinance. But this isn't the same One Piece world he would've recognize anyway, travel alongside Kazuto D Kaizo as he not only joins the Straw Hat Crew but also expands it beyond its former 11 members.
WARNING: The Straw Hats will become a BIG crew, characters from both games and some OC characters from artists (whose permission I got) are included, MC will be with Robin, the MC won't be the sole focus, I will expand in everyone's personal stories so that they have character growth.
NO GAY/YAOI, LESBIAN/YURI CONTENT.
I will reffer to both Yamato (SHE) and Bon Clay (HE) and any other trans character by their born gender since it's a hassle to change it later on.
There may be romance and +18 scenes but never NTR.