Leona, the first woman assigned to the Central Division of the Special Forces, is partnered with her old academy rival, Regan Cranford.

Although the two don't get along well, an angel named Sylphion appears before them and reveals a shocking truth:
Their future child will one day defeat the Demon King and become a hero who saves the world.

Mutually respectful of each other, Regan and Leona decide:
“If we could marry and have a child together, we might as well just defeat the Demon King ourselves and save the world.”

The angel is bewildered by their bold resolve, but due to unexpected events learns about "dimensional broadcasts" and meets the constellations.

Intrigued by the situation, the constellations, with the angel’s help, begin to tie the bond between the two.
As the two begin to fall in love, the constellations attempt to create a romantic situation spanning across the multiverse...