One Piece: One Slash Cleaves the Red Line

Lin Feng stayed up all night watching Pirate King, but when he woke, he found himself face-to-face with Rayleigh, as a young slave. Rayleigh rescued him, Shakky took him in, and he began training under Rayleigh, gradually growing stronger.

Then he started recruiting followers, teaching young girls, rescuing slaves, and building his own power to stand against the Celestial Dragons!

In the end, with a single slash, he split the Red Line and toppled the Celestial Dragons' rule.