I Wasn't Sure if She'd be Able to do it the First Time, but I Creampied Her Again and Again, Practicing my Fucking on her with Animal Desire. Mayuki Ito.

My first girlfriend... Faced with the challenge of losing my virginity, I couldn't muster the courage. 'Don't you want to have sex with me?' Feeling pressured knowing she was pushing me, my sister, who has a brother complex and loves me too much, said, 'Want to practice sex? You're scared, right?' She forcefully kissed me and groped my dick... She squeezed my soft boobs and I got an instant erection! She let me ride her cowgirl style raw!? I couldn't hold back and came inside... It was supposed to be practice, but I got hooked on sex with my sister...