Transmigrate into The Sword Stained with Royal Blood and Become a Peerless Expert

Newly reborn with a System at his side, he learns every martial art under the sun and steadily plots to conquer the realm, becoming a celebrated general who hunts down pirates overseas. He vows to see the campaign against the pirates through to the end.

No harem, no female lead (maybe).

[System + Transmigration + Fanfiction]