The woman his father remarried, Rikako, was such a beautiful woman with huge breasts that his son, Noboru, envied her! While he was happy about it, living with the charming Rikako forced Noboru to lead a frustrated life. To vent his frustrations, he decided to go to a soapland. Following the staff's recommendation, he chose 'Rika.' And who appeared but his stepmother, 'Rikako.' Stunned by the reality, Noboru's dick reacted instantly...
