Searching for an older hentai that I only remember bits about. I’m sure it centered around several student couples (I believe 3 couples) who would do exhibitionism or other sex activities and record what they did when it was their turn with the camcorder. I do remember the end of the manga had them gathered around a TV watching the final video together, critiquing and some embarrassed.
Hopefully I’m remembering enough correctly, would love to find it again.