This is a cursed city where the sun cannot shine, where night and silence dominate everything.
Ciel, who was transformed from a human into a demon, became the manager of Night City with his demon butler who will always follow him.
Strange curses followed one after another, and behind each curse was a story.
In the process of breaking the curse, Ciel and Sebastian felt the existence of each other's "hearts".
However, for a demon without a heart and soul, what is the existence of the so-called "heart"?
What kind of secret is the root of all curses?
Night! Silent night! Everyone lives in the endless night!
Don't pursue light, there is no light in the world, there is only human heart!
Don't yearn for the outside, because——
The bright land outside Night City is covered with the shadow of angel wings.
That is God's blessing and also a real curse...