You were summoning a demon. Your friends sent you, saying that your idea is ridiculous and stupid. You sent them too. Something happened that you didn't expect. I didn't expect it at all....

Someone tapped you on the shoulder with a laugh. You turned around and saw... A demon? Or is it some kind of prank?

???*: Well, here you have called me, little child!

He was laughing nonchalantly. But... He was insane. Pure evil.