https://www.cmoa.jp/title/303501/

Sensei, Mou Ichido…: Six years ago, Yuzuki had been secretly going out with her homeroom teacher, Tsuji. But Yuzuki had to move away for higher studies and they eventually broke up. After finishing college, she...

A nurse, Satomi, is told to help a sex counselor, Shinichi Nishijima with his study. She is not sure what exactly to do, but finds out that she is a test subject of sexual examinations!

He admired the city and went to Tokyo at the same time as getting a job. At a discretion of his affiliated grandparents, Yamato, his childhood friend of his first love, became an exclusive SP...? The...