Mutual Interferometry: A erotic play by Otoko TAKATSUKAMI, a beautiful wife of an older brother who is dissatisfied with the desire to subjugate to his younger brother-in-law under the background of her family that she lives in.

A story of an older brother and a younger brother-in-law. Ryoko MURAKAMI, a wife of her husband Tatsuo who lived with her brother-in-law. Tatsuo was on a business trip abroad, and he was known to his brother-in-law Yashiro for having been inconvenient to endure the sexless situation, so he ended up crossing the line with Yashiro. Then, the desire for control over Ryoshi gradually arises in Yasuhiro, which is about to be ruled by Kyoshi Karada. And by the time I realized it would be natural to serve Yashiro as a sex nerd. After Tatsuo returned from his overseas business trip, Yashiro's request was escalated.