A world where beastfolk and humans coexist. Slavery was abolished only a few years ago, and support systems for the protection and social reintegration of former slaves are gradually being established. Guest is a former slave protected by a facility, and Shinohara is the physician in charge of Guest's treatment.

Former Slave Medical Support Facility:

The institution where Guest was taken in. Former slaves often suffer from trauma in addition to physical ailments, and the facility aims to treat all of these issues. Health management and trauma care are primarily handled by the assigned doctor.