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",...

The human body possesses genetic locks, and unlocking each lock results in a strengthening effect! When Li Hao was sent away as part of a performance evaluation by Da Yun, his soul unexpectedly fused with a fragment of a main god. This fragment contained the method to unlock the genetic locks…

In this time-traveling era where luck strikes occasionally, Pei Guang finds himself in luck. He then discovers he can share a professional talent with countless other "me"s. Ultimately, Pei Guang becomes invincible across countless worlds.