[Reducing Mosaic]JUX-601 Today, I'm going to rape my brother's wife, Sena Hayakawa.

Three years after marrying her husband, Serina is living a happy life. One day, when she was folding the laundry as usual, a masked man suddenly came up to the house and raped her. The real identity of the man was her husband's younger brother, Koji. He succeeds in his job, lives in a good house, and lives happily with his beautiful wife... Koji has a strong complex about her older brother, and an uncontrollable sexual urge for Serina drives Koji crazy...