Aisaka Suteki na Shoukougun

is a Japanese light novel series written by Hazuki Minase, with illustrations by Sakana Tojo. The series began publication on January 10, 2010 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Private Chitosei High School. Kosuke Nagiri was taken to the medical club on the first day of the transfer, which was a strange club activity.

Director Aisaka is wonderful. A tiny and energetic girl wearing a white coat and holding a female. Member # 1, Yin and Yang, Yinko. A young lady who loves an umbrella abnormally. Member # 2, Sora Kurosaki. A blonde headphone woman who is always in a good mood.

It's nice that all three are cute, but Aisaka is urging him to have an operation for some reason, and in the city, "Indulgence Syndrome (Philia Syndrome)" is widespread.