Unable to refuse her virgin brother's desire. Just one centimeter across his underwear… wait… it's already inside! The possibility of no end... the deeply inserted, mushy penis trembles, a torrent of unparalleled thrusting. Satsuki Mei DASS-203

My sister asked me to give her a massage, and when I saw her exposed, I got an erection! I pressed my head against her panties and started rubbing. Ah, I couldn't hold back! As a virgin, I begged her, and she said just one centimeter would be enough. So I immediately pulled open her clothes and inserted my penis! I grabbed her buttocks and thrust my penis deep inside! Even with our mother right there, I didn't care and kept thrusting! Finally, my sister also became immersed in the sensation, and I brought her to orgasm with my penis! I ejaculated a thick stream of semen, soaking her vagina! "I'm sorry, sister, it felt so good..."