The protagonist's parents go overseas to work, leaving him alone in Japan. He decides to move in with his cousins, but... he doesn't know how beautiful they all are! Better yet, all of them are head over heels for him! That fateful summer, at a restaurant called Corretto, a story full of slapstick humor and sexy yet cute scenes will play out! Who will our main character end up with? [Translated from [url=http://www.light.gr.jp/light/products/sister]official website[/url]]