On the "Day of Divine Grace" that occurs once a thousand years, Chief Saint Hertz stood at the pinnacle of glory, but his heart was filled with cold doubts. When thousands of believers sacrificed their entire lives in exchange for divine grace, what Hertz saw was not a gift, but a costly cycle maintained by faith and vitality. He stared at the sages' stone tablets that were "extinct" due to out-of-control divine power, and raised a subversive question: The more pious and powerful a person is, why does the fire of life extinguish faster? Under the warm warning of his close friend Aaron and the glorious appearance of the temple, Hertz's thinking is like a crack, quietly reflecting the shadows and paradoxes that may exist deep in this sacred system.