Warhammer: Terra Is Dead, Long Live Imperium Secundus

[Warhammer + power fantasy + massive armies + rebellion + slaughter!] He transmigrates into Warhammer 40K as Lufgt Huron, Chapter Master of the Astral Claws. He knows his fate is to rebel and become the master of the Red Corsairs, but then the Strongest Emperor System suddenly descends! Purge the Orks, exterminate the Aeldari, and unlock the Human Supremacy trait. His followers' human genes are purified, their combat power soars, and everyone else is just some stinking outsider! The people believe that I alone am the true master of mankind. He receives an ancient divine weapon as a reward! The Heirloom Seal of the Realm stabilizes National Fate, the Chiyou Emperor Armor absorbs damage, and the Xuanyuan Imperial Sword slays heretics. Armed with ancient divine weapons, he is no weaker than a Primarch! Usurp the great Chapters and spark a rebellion, establish the Imperium Secundus, and unlock the trait: Destiny's Chosen! The stronger the Imperium, the wider its borders; the wider its borders, the stronger the Imperium! Gazing upon the rotting Imperium, Huron cries out to the people: “Terra is dead! The Imperium Secundus must rise!” He retakes human worlds one by one. The glory of the Dark Age of Technology returns, the flames of revolution spread across the galaxy, and humanity will be great again! Until, during a visit to Terra, Guilliman pins me to the Golden Throne and gently reminds me, clad in a golden robe: “Good son, dress warmly. It's cold out.” Looking at the court full of officials, Huron lets out a helpless sigh: “You lot have really made things hard for me!”