Add me to your collection, doctor...

Nene Morishita came to a certain infertility treatment clinic, and during treatment, she is shown the doctor's big dick, up close. He offers to give her his so-called "special guidance", and so he has sex with Nene while wearing a condom. Several days later, Nene comes back seeking more sex with the doctor, after confiding with him that her sex life with her husband still hasn't gotten any better.

What will the doctor show Nene this time?

(Source: DLsite, translated)

Released at Comiket 99.