My name is Sayuki Natsume. Ever since I lost my husband at an early age, I don't want to lose the education of my only son, Minoru-chan, to someone else's... Today as well, I go to my son's study room and give him step-by-step education. It's.... However...my Minoru-chan has a secret that I can never reveal to others...it's very embarrassing...a secret called daily breast rubbing.
