Martial Arts: the Villain Is More Important Than the Protagonist

Wake up! I've traveled through time, He is also the most perfect villain boss in the book. Family background! A thousand-year-old family in Kyoto. My father was an important minister in the court, the best warrior in the world, and commanded the world's troops. The mother is the younger sister of today's emperor. But... I am actually a big villain, but who says villains can't be protagonists? Son of luck? It's just my stepping stone! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.