Hontou ni Atta H na Taiken Oshiemasu

The editorial department at LEED receives hundreds of sex stories from real couples,and 12 of the most unusual and exciting are reproduced here in manga form! Secrets too shameful to share with wives, husbands and friends are here laid bare to you to enjoy! Right, or oh so wrong... you be the judge.
(Source: Digital Manga Guild)