Purifying Golden Blood

[Extraordinary protagonist + slightly dark and disabled + possible physical discomfort setting] A diseased city cannot grow into a healthy child. Everyone who grows up in a city understands this. Everyone is on the road to atonement since birth. In the city, the sins of urbanites will emerge and exist in the form of an entity called "pain." It is a kind of black round hole that is creepy just by looking at it, and it is impossible to peek inside. From the hole, monsters called sin entities will be born. They hate people and regard people as enemies to seek revenge. Moreover, when the amount of "pain" reaches a certain level, they will have the power to affect urban people. In addition, there is a special group of people in the city called blood descendants. They have the same power as "pain" and can use "caressing" to eliminate "pain". The organization composed of blood descendants to solve "pain" is called a care group, obeying the orders from the superiors to solve "pain" for the city. Of course, not all vampires voluntarily join the care group, because only monsters on the verge of losing control will be included in the care group - they are also part of the "care" group. During a caregiving operation, the caregiving team picked up a mysterious man named Burks. Why he is called mysterious is because he has no head, or rather, his head is replaced by a floating book. Just when Box, who had lost his memory, was almost killed as a sinful entity, he "volunteered" to join the care team after accidentally showing his strength and controllability. But why his head is alienated, his memory, who he is, and what the sins of urban people are, all these unknowns will be revealed to him.