Starry Sky – In Spring.
Seigatsu High School is a boarding school that specializes in astronomy, that is built on top of a hill with a great view of the stars.
Yahisa Tsukiko, is the only girl studying there, that lead a relaxing life with her two childhood friends, Kanata and Suzuya.
Until, Tomoe Yoh joined them, coming from France.
Evetually four of them got to know one another and grew to become the closest of friends.
But in the middle of their junior year, special relationship began to blossom among them.