Because there has been constant friction between the light universe managed by the Emperor's Armor and the shadow universe managed by the Shadow Emperor, they have been at loggerheads for thousands of years, seriously destroying the peace of the universe. For this reason, the rulers of the two universes decided to start a competition between light and darkness, so that their subordinates can avenge their grievances and retaliate with grievances.
After thousands of years of competition, the current score of the light and shadow battle between the two universes is 20 to 20, which is a strange tie.
For this reason, the rulers of the two universes decided to start a final overtime battle. The winning side can put forward a condition, and the story begins here...