Souka experienced a seizure three months ago due to the "I-Type Vibeil Outbreak" illness. This illness causes a surge in antibodies, leading them to attack the body and ultimately resulting in death. Sadly, there is no available cure, but there is one treatment option. Souka's antibodies can be transferred to another patient, Cildy, through a bite. However, Cildy has "Louge Golge Syndrome," which nullifies any antibodies and increases her susceptibility to diseases. Both Souka and Cildy rely on each other for survival. However, over time, Cildy's condition worsens, while Souka hints at a concealed secret that relates to their illnesses.
