Yuzuki Daigo

A handsome boy with an elegantly shaped face. He is a victimt of Nosfera disease and has been hospitalized at St. ReiKura Clinic since its opening.

He is a first-year student at a private school, but is on leave due to hospitalization. He has been in the hospital for a long time because he was born sickly and weak, his physical growth is slow, and is not well versed in sexual knowledge.

He becomes the first to develop type B nosfera disease and abnormal arousal. At about the same time, his late secondary sexual characteristics suddenly appear, and he ejaculates extremely large amounts of semen.