Bring the system to Pirates

(system + talent + kendo + decisive killing + establish your own power)
Not a hot-blooded article!
This is a story that starts from the South China Sea, and the boy who got the system started his adventure.
Luffy wants to be his man! ! !
Obtaining the kendo inheritance of the sword god Li Chungang and changing the fate of Ace, Shanks and Hawkeye are all his friends.
Portgas.D Ryan, Tianlongren is willing to be his slave. This man changed the world pattern by himself and set off a red revolution in the world of pirates!
The introduction is weak, everyone, please read the book