I was secretly peeking at my sister's masturbation, but she found out and got really angry! Unable to contain her anger, my sister straddled me without panties, and as a virgin, I got an erection from the feeling of her raw pussy for the first time. When she saw that, she teased me, saying, "Are you getting an erection because you're excited by your real sister!?" and started to jerk me off! Seeing how sensitively I reacted while pretending to be strong and saying, "Who would get excited by my sister?", my sadistic Kokoro escalated! While playing with my nipples, she gave me a blowjob, and my sensitive virgin cock couldn't hold back and ejaculated into my sister's mouth! "Next, make me feel good," she said, inserting herself in a cowgirl position, pounding me hard until I came, and my virginity was taken by my slutty sister! *This work is a sequel to "My sister got angry after I kept interrupting her masturbation, scolded me, hit me, found out I had an erection, and milked 9 loads of semen out of me. This is an excerpt from "Sarina Momonaga" (product number: dvaj00573).