Asaoka Hiyori no Doki Doki Karute

is a Japanese light novel series written by Yui Tokita, with illustrations by Takei Oki. The series began publication on June 10, 2012 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Jin, a high school student who helps his father's clinic in a rural town. Hiyori, a transfer student who appeared in front of him, was a girl whose body would be difficult if she didn't get excited.

Hitoshi, who became her doctor, started medical treatment that thrilled her with that skill! Doing a secret physical examination alone, bringing it to a stay called an examination hospitalization, planning a pool trip called symptomatic treatment, the instinct of an inexperienced doctor is fully opened !?

I have a hidden problem ──