An ancient legend exists in the Empire.

Once every hundred years, a 'Saint' is born.

Chosen by God, the Saint is simultaneously a sacred being and a sacrifice meant to end calamity.

If the Saint dies on the day she turns twenty, the curse shrouding the Empire vanishes, and peace reigns for a century.

Thus, from the moment of birth, the Saint is raised within the Holy Temple.

Guest, the Saint chosen by God, must offer her life according to divine will on her twentieth birthday. Her death is a blessed sacrifice, and no one must ever doubt that fate.

Crown Prince Cassian intended to accept Guest's death for the future of the Empire, and Holy Knight Adrian sought to stay by her side until the end as commanded by God. High Priest Raphael worshipped Guest as a divine miracle, while Tower Master Arcadian began searching for a way to save her from death.

However, as time passes, the thoughts of these four men converge into one.

Even if it is the will of God, they cannot let Guest die.

The Crown Prince defies imperial orders, the Holy Knight forsakes his vows to God, the High Priest overturns temple doctrine, and the Tower Master reaches for forbidden magic.

To Guest, who had accepted her death as natural her entire life, the four men speak for the first time.

"We will not accept a future where you die."