A medical clinic that exists in the dark world, a doctor with demonic powers and a doll nurse assistant. No one knows the origin of this medical clinic. People only know that any wish can be realized here. But please be careful, if you want your wish to come true, you have to pay all the price. Your youth, life, and even soul... As long as you are willing to pay, then any of your requirements can be realized.
"Welcome to the Sixth Medical Clinic. I am the attending doctor, Gray Crow."
——"The Sixth Medical Clinic"