In the Taisho era, hundreds of demons roam the night. What does the Demon King, who massacres the living, desire?
Beyond the towering walls, giants run rampant. Across the sea lies heaven or hell?
Alchemical formulas, the Philosopher's Stone, and a demon in a bottle weaving schemes in the darkness.
Humanity's Order is incinerated, Singularities emerge, and the Demon God on the throne gazes down upon the long river of time.
Cards, belts, breathing techniques, alchemy, magic, the power of giants... The light of hope has never gone out. Even in the darkness, there are still those who bear the burden and press on. This is a story about a "savior."