Included works: 1. The ex-con brother whom the younger sister falls in love with. 2. The obscene existence called the wife. 3. The only two siblings in the world. 4. Summer, sweat and the younger sister's apartment. 5. The pleasure of stealing the older sister's boyfriend. 6. The older sister's husband having sex with the blind younger sister. 7. Older sister and younger sister. 8. Forbidden incest on an autumn twilight. 9. The younger sister seduces her older sister's husband. 10. The obscene existence called the older sister. 11. The older sister's lustful summer at 27 years old. A total of 11 stories are included.