The otherworldly continent of Viblott, and the islands of Aelion, occupied for a thousand years by demons from the skies.
Humanity has no choice but to retreat to the ground and survive there.
Miluna, a tsundere little girl who insists on making Chenyue her servant; Vivian, the haughty imperial princess; and the gentle, charming Serizawa Yuna.
There are also an S-dominant older woman, a righteous princess knight, and an airheaded, adorable little maid~
What kind of hilarious adventures will unfold among them?
The bonds of a thousand years will become eternal longing, while forbidden love stirs endless fantasies. Thus begins a fantasy tale spanning a thousand years.
