This is an age of roaring steam. The gods languish among mortals, demons prowl the shadows, and people raise swords and knives amid blood and fire.
Relics, supernatural powers, firearms, airships... Mystery and science intertwine, while the classical world meets the modern age.
At this very moment, the demon hunter Lorenz, branded a traitor, has finally found a relic. In this age when mystery is fading, he summons... an angel.
As those holy wings descended, Lorenz heard a clear, girl-like voice: “Did you summon me? Then from today on, we’re partners~”
