Eight years ago, a race war of unprecedented scale established the dominance of the Angel Clan. From then on, the four major families of the Angel Clan began to rule the entire world. Later, the Witch Demon Clan, who suffered a disastrous defeat in the war, implemented a secret counterattack plan, completely breaking through the Angel Clan's defense line when the Angel Clan had gradually relaxed their vigilance and settled for pleasure, and finally drove the Angel Clan from the throne of their leader. Some members of the Angel family died in the war, some disappeared, and some were imprisoned. The Witch Demon Clan sealed the heirs of the four major families of the Angel Clan, the children who were still underage at the time, in a completely unpredictable space. These children, who had been pampered since childhood, had to shoulder the heavy responsibility of reviving the family and undergo various tests in the unknown space.
If you want to break the seal, only the heirs of the twelve nobles of the four major families of the Angel Clan can have hope together. So one of the four teachers of the God Clan (formerly one of the administrators of the Angel Noble Academy) Issue Cyrus took on the task of searching for the lost Angel Nobles. Together with the revival organization secretly established by the Angel Clan, they established a base specifically to accommodate the Angel Nobles - Angel Castle. And our story happened in this big angel villa...