The Chainsaw straw hat (Male Chainsaw man Reader x One Piece)

(Y) is an orphan who grew up as a slave for the Celestial Dragons. after being killed with his pet Chainsaw Dog Pochita he was told of an almost extinct race called devils which Pochita was one so (Y) made a contract with Pochita and turned into the Chainsaw Man as he woke up he killed 3 Celestial Dragons and freed over 100 slaves earning a Bounty of 2 million beri as (Y) escaped the World Government and met Luffy, Ace, and Sabo who became brothers. after 10 years Luffy and (Y) set off to be pirates together.