Asaoka Hiyori no Doki Doki Karute (Volume)

is the first volume of the Asaoka Hiyori no Doki Doki Karute light novel series, written by Yui Tokita and Illustrated by Takei Oki. It was released under the Dengeki Bunko Imprint in October 2004.

Synopsis
A girl with a throbbing constitution was naked by a secret physical examination to everyone !? Hiyori Asaoka, a transfer student, had a constitution that allergies would occur unless she had a stimulating experience. Knowing her secret, her jin tries to throb her with that trick--

(source: Dengeki Bunko Official Website - Translated)