JUX-601 Today I'm going to r** my brother's wife. Serina Hayakawa

Serina has been married to her husband for three years and is living a happy life. One day, while she is folding laundry as usual, a masked man suddenly enters her house and rapes her. The man's true identity is her husband's younger brother, Koji. Koji has a strong complex about his brother, who is successful at his job, lives in a nice house, and lives happily with his beautiful wife... and his uncontrollable sexual urges towards Serina drive him crazy...