Natsu Shoujo: Promised Summer

A censored edition of Natsu Shoujo, which adds a route for Shirayama Kaname.
Masato visited his friend's hometown during last year's summer holiday and met three girls, Aki, Miyako and Ayami. He enjoyed his time there, and promised with them he would come back again when he left. One year later, he returns there, and meets them again, who have grown up a little bit...