Tegome ni Sareru Kyuunin no Otome

The stage is set for an outrageous story of nine young ladies' sexual corruption. Masato, born a twin brother, has been forced to live a hard life under the law. Resentful of his long-absent brother, Masato plots to ruin the brother's life by impersonating him during his long absence, violating the village girls as he pleases, breaking off his marriage proposal with his wife, and then framing him for all his crimes. [translated from DLSite]