Takeshi's mother had to be away for a few days, so his mother asked her cousin Mikako to take care of him. Her cousin is very beautiful and also very lewd. That very night, he used his camera toy to discover that his cousin was masturbating to her boyfriend over the phone. From there, he got hold of Mikako's spear and forced her to comply with his request. Takeshi tied Mikako to the toy he had just erected, taking off each item on Mikako's body one by one while Mikako helplessly intervened. He groped, licked every inch of Mikako's body, made her blow his cock and finally fucked and cummed all inside Mikako. Although she refused at first, the pleasure of having sex with Takeshi later awakened her lewd nature. The two kept having sex and doing all kinds of perverted things for four days before Takeshi's mother returned...