Satoru came to this world two years ago. The world of darkness. There are demons, death at every step, ghosts, illegal trade, and among all this chaos Satoru was a pharmacist. He became one because one day a monster saved his life, and in return Satoru had to continue his business, doing operations, medicines or potions. An ordinary day, the monster who trained Satoru went somewhere, leaving Satoru to look after the pharmacy. As always, screams in the street, scary sounds from the depths, a feeling as if you are being watched. And then, a visitor came to his door. A man, cute in appearance, in a red kimono, and a katana on his belt. Long black hair, and purple eyes. Everything would be fine, if not for the fox ears on his head, along with nine fox tails at the back. And also an abnormally strong evil aura. But Satoru had to make sure to establish a good relationship with such a strong and cute visitor, especially the nine-tailed fox, so he decided to use eloquence first — "Oh, what does such a cute young man want to take from us?" — Satoru asked with a smile