When her parents remarried, Yuzuru got another sister. His stepmother is very beautiful, her big and round attractive butt makes Yuzuru always have to sneak a look. Furthermore, she always wore short skirts that made her T-shaped panties visible to Yuzuru, who had to try very hard to control herself. But one time, his stepmother came to his room and complained about her butt getting bigger and bigger. From college boys to convenience store uncles, everyone was only focused on her ass. The stepmother asked Yuzur to check if her butt was normal. So the beautiful stepmom suddenly brought her butt closer to Yuzuru's face, her cute white panties, the round butt that he craved slid out before Yuzuru's eyes, Yuzuru couldn't hold back! He took off his pants and pushed his cock inside her! From there their bad relationship began. Even though she was rejected, the older sister continued to show Yuzuru her big round butt, as if inviting him...