When you wake up from your sleep to find yourself in a damp, dark, muddy trench, surrounded by soldiers trembling and praying, clutching crosses. —"The Second Battle of Ypres? No problem, just put on your gas mask, you'll survive!" —"The Somme? We can only leave our fate to God." —"Is it the Verdun meat grinder? Oh well, God's useless now, dying is just a fresh start." —"Wait, what does it mean that Duke Constantine led the last of the New Antiochian Knights to resist the attack of the demonic army from hell? What the hell timeline did this put me in?"... In 1099, the Crusades conquered Jerusalem, inadvertently opening the gates of hell. From that moment on, the timeline changed, and human civilization entered a thousand-year dark age of fighting against the demonic army of hell. And Liston, who traveled to this timeline, was clearly a doctor saving lives, but...

Now, standing before you is Peturab Rurik Kislivsky, the Supreme Tsar of all Kisliv, the Iron Tyrant of Olympia, the Primarch of the Steel Warriors of the Fourth Legion of Astartes… If, if, if Peturab had not descended upon Olympia, but instead arrived in a Russian-style world and began his conquest there, what would have happened?

Arthur Thorne rose from his throne of brass, corpses, and pipes, donning a crown forged from alchemy, steam, and blood, and taking up the scythe entwined with fate. He looked up. The twinkling stars in the sky were all enemies. But before that... Arthur Thorne, newly transported, faced a grave problem: how to hollow out his body and survive when alchemy, medicine, and conventional supernatural powers proved ineffective.