Aido Hentai Choukyou Kurabu by Ail - Adult Sex Game

The main character is interested in abnormal sex. However, there is no one whom he can talk about it, so he just reads abnormal erotic magazines every day.... One day, when he is at school, he accidentally drops the magazines and some girls around him find it. When he is at a loss what to say, they suddenly say, "We are all interested in abnormal sex as well. Can you become our master...?" Like this, he becomes their master and starts abnormal sex life....