It was three months ago, when the bitches had an attack ... The name of the disease is "flash of type I vibration". Summing up the disease, you basically spread the antibodies within your body in huge quantities, forcing the antibodies to attack your own body, which will ultimately lead to death. There is no treatment from this disease, but there is treatment. This is in order to convey its antibodies to another patient, Sildi, biting his body to transfer the antibodies. Cildy also has a disease called "Louge Golge syndrome", which is the exact opposite of the outbreak of Vibration type I Souka, and Cildy has no antibodies, which will make it vulnerable to disease. They need a friend in each other to survive, but notice over the time that Cildy is becoming weaker and weaker. At the same time, Souka hints at the secret that Cildy carries with him. This mystery hides all the facts about his illnesses ...