The second of the four Starry Sky games starring the characters from the drama CD's of the same name.

Starry Sky takes place at Seigatsu Gakuen, a school which specializes in horoscopes, astronomy and other related topics. The main characters are all based on horoscopes.

Starry Sky Summer features Homare Kanakubo (Taurus), Ryuunosuke Miyaji (Scorpio) and Azusa Kinose (Sagittarius).

Starry Sky: In Summer focuses on Tsukiko's activities as a member of the Archery Club. With club captain Homare Kanakubo, vice-captain Ryunosuke Miyaji, and prodigy Azusa Kinose, she works hard to improve in time for the Inter-High competition.