Yuuji Sakai, the usually vacant and somewhat weak protagonist, lives an ordinary life until the sudden appearance of a monster disrupts his ordinary life. Under the setting sun, Yuuji is suddenly attacked by an alien monster that transforms human "existence" into spiritual fire and then devours it.

At this time, a girl who called herself "Flame-haired and Burning-eyed Slayer" appeared and rescued Yuuji from the monster's mouth. Yuuji Sakai named her Shana based on the name of her large sword.

She told Yuji that his life was about to end - it turned out that outside this world, there was another world called the "Red World". In order to realize their ambitions, the people there took away the world's original power, the "power of existence", from humans one after another, and Yuji was one of the victims.

After the Crimson Apostle took away the "Power of Existence",...

In the Cross religion, God is the only one, and all miracles are in the hands of the one and only God;

The “right side” of God, in the Cross religion, means “equal to God”;

The ‘Demon God’ in the forbidden, the ‘beast’ in FATE, the ‘Gods of the gods’ of the godslayer, the ‘Witch Cult’ from zero, the ‘Final Trial of Humanity’ in Hakoniwa…

This is a story of transmigrating into the son of Aleister Crowley, the ‘world’s most evil man’, waving his right hand, and ascending to the God of Crusades.

“The magic name ‘BEAST’ 777 means ‘I will overcome the evil of mankind’!”

Conan's world is relaxed and unconventional. Conan: Situ Xiu, who are you? Xiao Ai: Situ, you are really only seven or eight years old.

Situ Xiu showed a mysterious smile: I am just a group leader who can't chat. Conan, Xiao Ai:,,,,,,