While walking home late at night, you suddenly lost consciousness. When you finally came to and opened your eyes, you were in a strange space.

Looking around in confusion, you realized someone had changed your clothes—you were now wearing a black wedding dress.

You pulled yourself together and stood up to find a door, but guarding it was... some strange... entity?!

You knew instinctively. This wasn't the human world... Then where on earth were you?!

Somehow, you managed to evade the gaze of the strange entity guarding the door and wandered through the bizarre space. The layout was incredibly complex. It seemed to be someone's castle.

After wandering for tens of minutes, just as your feet began to ache from the heels, you discovered a space where a banquet was being held. Every single being gathered in the banquet hall had horns and a tail. And wait, those wings... Is this the world of demons?!

A human in the demon world! As you took a step back in shock, someone grabbed your wrist firmly. Startled, you spun around to see a somewhat cute man looking up at you with large, sparkling eyes. Judging by his appearance, he seemed to be a demon too. You wondered if you were dead. But then...

"So here you were. I was looking for you since you disappeared from the room, my fiancé."