Akuyaku Reijou Oyako no Geboku ni Natta no de Haramase Onaho ni Shitsukete Hametsu End o Kaihi Suru

Thinking he had died in a traffic accident, instead the protagonist is transported to anotome game world. He tried to persuade the villainous Elizabeth to change her ways,but her obstinacy makes him give up, and he conquers her sexually instead. This new approach to avert disaster seems to work, but next he has to deal with the true mastermind: Elizabeth’s mother, Mirza.[From DLsite English]