Believing his time in the hospital is finally concluding, Yamada faces an imposing new nurse named Otsuka-chan and the eccentric Dr. Amamiya who subjects him to strange medical procedures. The bizarre experiments uncover a rare mysterious condition through fantasy-driven tests that highlight her big boobs in suggestive ways involving blow job and creampie implications. This revelation transforms his expected relief into a continuing surreal nightmare as Dr. Amamiya's relentless research obsession pulls him further into unsettling trials in this hentai.