Uchi no Otouto Maji de Dekain Dakedo Mi ni Konai?

The main character of the story is an ordinary Japanese guy of short stature, who suffered very much in his youth because of his complexes. However, for all his complexes and shortcomings, he has one “advantage of a huge size” ” which his little sister Chiaki has been dreaming about for a long time. (As is often the case in hentai…) One day, she decides to throw a sex party for her little brother together with her lustful friends Nagisa and Yukiko. That evening, our hero lost all his complexes…