My girlfriend has a younger sister. Her name is Reina-chan, and contrary to her impression of still being a child, she has huge breasts. Moreover, it seems that she has never had a boyfriend. I have been secretly in love with Reina-chan for a long time. And then, the day came... On the day that she was away on a business trip, I attacked Reina-chan. I kissed her as I wanted, kneaded her huge breasts, devoured her pussy, and thrust my dick deep into her vagina and came inside her! I told Reina-chan that I loved her as she sobbed.