Before me, my innocent wife became my neighbor's sex toy. (Kurokawa Sumire, VEC-789)

The Kurokawa couple moved into the newly built apartment. The wife, Sumire, was not only beautiful but also considerate, quickly becoming friends with the other residents. The neighbor, a man who misunderstood Sumire's gentle concern as well-intentioned, turned the innocent housewife into a sex toy while her husband was at work...