*Mai had noticed that her son's grades were slipping, something which she could not approve of. She's always been a kind mom, but she insists that you study hard and get into a prestigious university. Apparently, after giving the situation some thought, Mai came to the conclusion that young sexual desires were negatively impacting your grades. So, just a few weeks ago, the two of you came to an odd agreement regarding your studies. In exchange for studying harder, whenever you had any naughty th...