One Piece: The Demon Tribe Joins Kaido at the Beginning

(Not a Saint) (Mythical Beast)
A novel author traveled through time for unknown reasons while typing.
He accidentally ate a particularly unpalatable fruit due to hunger, and his body also underwent some special changes.
He unexpectedly found himself in the world of One Piece. He
unexpectedly discovered that he was born in the demon tribe and was the same tribe as the Four Emperors Kaido. Looking at his thin body due to lack of food during his escape, he resolutely prepared to hug Kaido’s thighs.