Hachijouma no Hanabira to Kuroi Magnum

As you leaf through the photo album of Miyano Kokoro, your classmate and an upcoming idol, you can't suppress the excitement you feel from looking at her voluptuous body.
One day, you casually rent a porn DVD. You start watching it, but then you can't believe your own eyes as you look at the image on the screen.

[From DLSite English]