Dragonborn: the Gray Knights Return from Warhammer 40K

In the 40th millennium, mankind had no hope. The gray knight Lear was lost in the subspace forever in a battle. But he was not corrupted, but broke out of the temptation of the four gods and returned to his strange but familiar hometown, ancient Terra, which is as beautiful as the heavenly world. I thought that this was another evil god's bewitchment, or that a miracle happened to him. He came out of the subspace and traveled back through time. Until he saw an acquaintance with blue hair and golden eyes, driving a Maybach on the high road. That was the young Chu Zihang, who did not yet have the domineering power of a president. From a distance, in a twisted space similar to subspace, there was the smell of evil spiritual energy. Lear didn't know what it was, but the Gray Knight's first priority was to protect humanity. Now, hopefully, that evil will face the Emperor's most loyal scion, humanity's last hope, and the great enemy of the Warp, the Gray Knight of the Purifying Blade of Chaos.