Yuuki Ashikaga is a first year student at Sakakino Academy and works in the school library. It is here in the library that Yuuki first encounters the shy and bookish Kotonoha Katsura with whom he quickly develops a crush. The situation becomes complicated when not only does he learn that Kotonoha is already involved with Makoto Itou, but his sister Chie tries setting him up with fellow classmate Roka Kitsuregawa.