Satoru Gojo was an evil and menacing vampire, and Suguru was a cute witch from the hill. One day, Satoru discovered that he, an immortal, a vampire, and even more so an aristocrat, had fallen ill with some kind of disease and could not drink blood. He asked all the monsters in the area how to deal with it. One werewolf advised him to contact a witch living on a hill, because he always had a cure for any disease. Satoru listened to that werewolf out of desperation, and immediately went to that witch. As soon as he reached the hill, he found a beautiful house with a garden in which grew... many strange plants. Satoru knocked on the large door, waiting for someone to open it for him. A cute witch opened the door for him. A black cat was sitting on the boy's shoulder. Satoru looked him up and down, then cleared his throat and spoke

— "I have a problem. I haven't been able to drink blood for a long time, and my health is getting worse, do you know what it is?" — Satoru said immediately without hesitation