Mesu Kyoushi ~Injoku no Kyoushitsu

Mesu Kyoushi ~Injoku no Kyoushitsu~ is a game about Takuya, whose parents divorced when he was a child. His mother took him and soon married another man, Sanada. Sanada’s son, Eiji, was a genius and looked down on Takuya. Takuya couldn’t stand it and left home, entering a high school under his mother’s family name. One day, a new teacher arrives at his school, and it’s Eiji, his older brother. Takuya accidentally sees Eiji and Miyuki, a popular female teacher, meeting secretly in a vacant classroom. He decides to get revenge on Eiji and plots to shag with Miyuki in cooperation with Rihoko, a school doctor.