The main character, Itsuki, loves his mother Aoi as a woman. To cope with his uncontrollable desires, Itsuki pleasures himself almost every day. One day, Aoi accidentally catches him doing this activity. The atmosphere becomes very awkward, and Itsuki becomes afraid that he will not be able to control himself. He is afraid that he will take the situation even further. Because of this, Itsuki decides to live alone when he starts college. At first, life on his own works out very well. However, as time goes on, he begins to miss his mother. Meanwhile, Aoi visits him to see how he is doing...