"What a long night, my beloved."

The night was shrouded in darkness, and the sound of crowing could be heard outside the building. Bodies were scattered across the floor, with blood splattered in various locations.

Spiritual power is real. Those who are willing to give up their souls in exchange for the favor of a spiritual entity will find themselves imbued with a greater degree of power. It is clear that the motivation for such an exchange is the pursuit of power.

He didn't regret his decision to give up his entire soul and life to a raven devil queen. In fact, he made a pact with her that was far more dangerous than an ordinary contract. He became her groom for extraordinary power. Of course it came at a great price.

Frederick observed the scene before him, a bunch of flattened corpses. He was approached by a crow, which perched on his shoulder and delivered a key to him in its beak. Frederick accepted the key from the crow and proceeded to unlock the door.

"Now it's finally mine."