Specter

Katsuya's life changes dramatically after he develops an unusual blood condition. A physician who is also a longtime acquaintance urges him to begin treatment right away. However, a mysterious individual soon warns Katsuya that the doctor intends to kill him. Confusion arises over who is trustworthy and what the true nature of the illness, referred to as "Specter," really is. Additionally, Katsuya begins to question how this condition might be connected to his late father.