my friend's mother, kayama natsuko.

Natsuko is a mother who lives with her only son, Naosuke, because her husband has been assigned to work alone for a long time. One day, a friend of Naosuke, Makoto, came to stay in the Kayama family. Makoto, who lost her mother when she was young, is attracted by the kindness and rich body full of natsu's motherhood. Notice such pure feelings, do not accept the chimotsu that has been filled with blood in earnest. On the basis of that day, there were repeated sexual intercourses with prohibitions long ago.