A wave of pleasure so strong that it keeps her from sleeping runs through Kasumi's body. When she wakes up, her son Haruhiko is gently touching her breasts. Her body gradually becomes more sensitive to his exquisitely soft touch, and she is overcome with a pleasure she has never felt before. She lets out an involuntary moan, and in surprise, Haruhiko stops his hand... "Hey, touch me more like you did before. It felt so good." Ignoring Haruhiko's confusion, Kasumi's body was craving more pleasure.