Journey Through the Heavens, Starting with One Piece

(Profit above all) (Ruthless) (Dark) (Never hold the protagonist back)

He transmigrates into Blackbeard's body and takes the name Teach, but doesn't eat the Yami Yami no Mi as in the original story.

From the start, he sets his sights on the Time-Time Fruit and successfully eats it.

Tenfold, hundredfold, ten-thousandfold time acceleration