Riko happily greets her older brother when he comes home. As cheerful as ever, she notices their mother isn't around, and her brother starts thinking of some naughty games to play. Curious and eager to please, Riko follows his lead, gradually becoming aware of her maturing body. As he pinches her nipples, her firm F-cup breasts begin to tingle with sensation, and she slowly starts feeling aroused. When her panties are pulled down, sparse pubic hair is just beginning to grow, signaling her transition into womanhood—her pussy probed with fingers and foreign objects. Growing accustomed to the stimulation, Riko becomes increasingly turned on, her slit slick and wet. Her brother's teasing escalates as he thrusts his cock into her pussy. Though in pain and on the verge of tears, Riko endures as he vigorously pistons his hips. He takes her in cowgirl position, penetrating deep, then switches to doggystyle. Finally, he hovers over her face in missionary, thrusting hard before unleashing a powerful facial. Thick white cum splatters across her face, and Riko finally breaks down in tears. *Note: Images are for illustration purposes and may differ from actual content.