“The saintess of the Runhardt Empire must receive a man’s essence once every month when her divine power reaches a certain level.”

The noble and virtuous saintess of the Runhardt Empire, Bellota Rosebeth.
The commander of the Holy Knights who harbored unrequited love for Bellota for a long time, Seiden Blackwood.

On a certain full moon night, tormented by impure desires towards Bellota,
Seiden learns that Bellota is under a curse to receive a man’s essence once a month.

Filled with anger towards this audacious curse,
Seiden, who cannot bear to give Bellota to other men, volunteers to become the man who will lift Bellota’s curse every full moon night.

Thus,

“You must remember it well.”

The saintess and the knight

“That from now on, only I shall be the man who knows about the saintess every full moon.”

They embark on a precarious relationship that must not be discovered by anyone.