Mother's best friend

His son, Shinya, is to serve as the talk partner for his mother's best friend, Misa, until the party is ready. She tries to get some room for Misa, stunningly, but... I was so concerned about my generously exposed cleavage that I couldn't concentrate on the conversation. (I want to touch those big breasts...) Before I knew it, Shinya began to have that desire, and ends up in unpleasant fantasies...