mom's armpit hair

Kenichi is an only son who has been raised with care by his mother, Reiko. His father, Ryuji, treated Kenichi harshly and told Reiko not to be easy on him. However, Ryuji also treats Reiko like a child, letting the hair grow in Reiko's armpits and enjoying her growth. One day, Kenichi discovers this hidden pleasure. Kenichi is jealous of Ryuji enjoying his mother's private parts that he doesn't know about. When Kenichi saw Reiko's expression of joy, he began to want to make Reiko his own...