Yuri and her brother put on a show of being at odds in front of their parents, but in reality, they are siblings who love each other. Yuri and her brother went to visit their grandmother's house ahead of their parents, with a plan in mind. That plan was to have sex in an unused detached room, hidden from prying eyes. Yuri's slender body had at some point developed large breasts. Her brother, excited by touching his sister's body for the first time, ejaculated immediately upon penetration. They had only prepared one condom. The two of them took out the condom filled with semen…
