JMD-116 - Touching is enough to make them melt: 5 housewives in the apartment complex

The protagonist visits four former female students at the request of a bedridden teacher to check on their lives. He discovers that all of them are dissatisfied with their marriages and are cheating on their husbands. Despite the guilt, they can't resist their urges and continue to have affairs. As he peeks into their sex lives, he starts sharing his own experiences as well.