Corrupting My Girlfriend in Another World - v0.1.4 by R1leyD4rk

You and your girlfriend fall into a parallel world while investigating a gossip that circulates around the city of Sirua. Discover or join the plot of the kingdom of Dulobia and the power that rules in Vesteria. Your adventure in that world begins to awaken something you have never experienced before - choosing between building up your relationship or satisfying the perverse desire to corrupt your girlfriend Sakiko and watch her with other men.
Will they make it to the end of the adventure without falling into darkness? Or will they surrender to their deepest desires? You will choose their fate.​