先生は女王様

By an accident, you have become a sex slave of your teacher Shino who is beautiful and has perfect pair of breasts, and you've had unrequited love for for a long time. She use you as a sex slave and make you cum in many ways: handjob, footjob, titty sex..... One day, a pretty girl student Rinko, carry a grudge against Shino attempts to get him back from Shino.

[From DLsite English]