寝取られ淫母物件～沙也加～

Sayaka and her son Kazuya live together in an old apartment.

Although their life is not in affluence, they have lived peacefully without troubles.

However, a tiny crack appears in their modest daily life as the uneventful
circumstance surrounding Sayaka and her heart and mind show signs of change!!

But one day... It was all of a sudden that Sayaka disappeared.