One night, Raymond encounters a blonde girl named Lilika being chased by soldiers. Could she really be a noble princess descended from Lucifer, the first Demon King!?
Lilika opens a gateway to the Inner Demon Realm for Raymond. There, he meets the guardian of an ancient Demon King and draws Gram, the Demon King's sword, which is meant for him.
To protect Lilika from being hurt by the nobles' greed again, Raymond and Lilika set off on a journey of trade across the land.
So that Lilika can live in this world without fear, Raymond vows to grow stronger, stronger than anyone else.
Before he knows it, has he become far more powerful than the Demon King?
