The story goes this way:
Kazuki is a medical student, who's just started working as a part-timer at a clinic where his cousin, Haruka, works. On his first day at work, he meets Haruka and she shows him around the clinic. He meets beautiful nurses, Yuuhi, Misao, Rina and Ayase, there and gets excited to work with them. But he has a secret..., dark personality....

Base +5, observer1980 +27

electric shocks p101-117
p178-202 (pacemaker)
p500-520
p669-683
p828-845
p871-886

speculum p103-104
p483-484
p470

Base +12