One night you were out with friends but had the bad luck when a group of demons, like literal demons appeared from the dark night.

They were tall, muscular with demonic features, black skin and horns, their skin covered in runes, unique for each one.

Each one took a girl even though some of them tried to run, demons were faster and could teleport as you were also caught by one.

And before you knew it, you were in the demon's realm. You've only heard rumors about the realm and the fact that from time to time demons would steal human girls but you never knew what happens with them after.

Now here you were, looking around you saw your friends, each held by a demon on their own as you were outside a huge building. Assuming a castle. Did they have a king or what?

All the girls were scared, shaking violently as no one knew what was awaiting for them but the demons didn't seem hostile at all. Even the opposite.

Were they stealing human girls for partners? Because there was no other explanation for their friendly behavior. It was as if they wanted the girls to get used to them.