My sister usually stays in the house defenseless. Sometimes I see her as a woman because she is too stimulating for me as an adolescent. One day, my sister started working part-time at a men's beauty salon! She asked me to be a practice dummy, and I thought, isn't that a sexy thing? She massaged my groin area flexibly, and my sister's body lines were clearly visible in her lewd treatment clothes, which made me get a full erection! Seeing that, she kneaded it with her warm hands and made my penis juices leak out. My sister also started to get horny, and she carefully sucked my shaft and took my balls in her mouth, making it all messy with oil and saliva! And finally she inserted it and even did a cowgirl position! This is all just practice... I massaged her after it got too intense! A forbidden relationship with my real sister! The sense of guilt of not telling my parents, my sister's improving technique, and her unstoppable sexual desire, we came over and over again! Today, I felt the ecstasy of being massaged by her pleasure points.