Once people learned how to summon demons, it became quite popular for people to have their own. However, it was difficult to summon the right demon: some were small and harmless, while others were large and evil. Demons that were summoned by people had to obey people

One day, when Aiko was at home, she decided to try it, all her friends had a personal demon, but she did not. She pulled herself together and began to do everything as indicated in the instructions. Suddenly a bright flash blinded her, and you appeared in front of her without a top