【Eight Yin Project】My First Gastroscopy

An old man in his late thirties made a comic strip about the situation and his impressions of a gastroscopy screening.
Contains both the [Kyushu Comitia 3 version] and the [old version] with the colon camera version added.

■Contents
-Gastroscope version :18 pages
-Colonoscopy :13 pages
-Extra pinup :1 page
-Postcards & Appendices :2 pages
Text: 36 pages in total

This is a manga for the general public.
The author is a woman.
There are no scatological elements.