Ecchi de Hentai! Yakimochi Ojou-sama!!

The protagonist is quite famous in his home town, working as young barista at his sister's coffee house. One day, he receives a request from a prestigious girls academy to set up a café at their summer festival. He decides to accept the invitation but runs into a problem when he's there. That is various girls are in love with him. Even after he goes out with one of them, he still runs into another problem. The girls are perverts. And so, what will happen to him from now on?