"Make sure to clean it thoroughly!" My older sister, who always treated me like a child, gently and carefully peeled back the foreskin of my phimotic penis and cleaned it meticulously! (Feng Meiyou ROYD-306)

I have a very beautiful older sister who's much older than me. She's incredibly meddlesome, and even now that I'm in high school, she still treats me like a child. She interferes not only with my studies and personal life, but even with how I bathe. After seeing my phimotic penis, she said, "You really need to clean it properly! Otherwise, girls won't like you!" Then she tried to peel back the skin to clean it!! Even though it's already pretty, being touched like that made my penis gradually harden, turning into an adult's erection! My sister was initially surprised, but as she excitedly started doing it, I ejaculated into her because it felt so good! I thought it was terrible, but my sister, aroused by my growing penis and the semen, said, "Hey…want to do something more mature?" and showed an incredibly erotic expression I'd never seen before!