Ever since his son Kensuke was born, Kazuya had been experiencing no sexual activity at all and his frustration was building up. One day, he heard that the wife of his neighbor, Katou, Haruko, was going on an overseas trip and would be leaving her son Yasuharu in his care for a few days. Kazuya's heart pounded with excitement. This is because he had heard from Haruko that 'Yasuharu has a big dick'... On the day it happened, Kazuya couldn't hold back the throbbing in his crotch after hearing Yasuharu and his son talking about how 'his dick is 17cm long'.
