The Strongest Teacher in the Great Voyage

The main god's space was accidentally broken, and Bai Heng, the strongest king, accidentally came to the world of One Piece. In order to find a way back to the main god's space, Bai Heng began to establish his own power and easily conquered several disciples. And a few years later, when Bai Heng woke up again, these disciples had become the most powerful people in the world.