RBD-841 12 Female Teachers Fallen to Slave Soap Meguri

Shiori's older sister, Kaori, was a teacher at the school where her father was the director, but she committed suicide just before she was about to get married. The following year, Shiori inherits her sister's will and becomes a teacher at the school, but ends up falling into the trap of Onizaki, the soap manager and father of Natsumi, a dropout student in her class.