ROYD-305 My sister is plain and reserved, but when she takes off her glasses, she's a stunning beauty. I couldn't hold back and pushed for it, and she let me do dry humping followed by raw insertion, even letting me finish inside. Life forever.

Usually, my sister-in-law doesn't wear makeup and is quite plain. But I know she's beautiful! My sister struggles with relationships, so I can't help but give her advice. From that point on, her makeup skills improve rapidly, and she starts to gain confidence. Eventually, she transforms into a stunning beauty that turns everyone's heads. However, as her brother, he can't stay silent. On a night when their parents are away, in the heat of the moment, he confesses to his sister. But she rejects him on the grounds of being 'siblings.' 'It's fine if we don't insert it, just rubbing is enough...' Thus, the two agreed to only have outercourse. Unable to hold back with just frottage, the two young people cross that line. They do it over and over again, enjoying raw sex too much. Initially, they were just a physical relationship, but gradually their hearts connect, becoming lovers.