|Club||Sōei Photography Club|
|Voiced by||Reiko Takagi|
Masashi Edogawa (江戸川 正志) is one of Saku's classmates and friend, and while he often takes part in Astronomy Club activities, he is actually a member of the Photography Club. He enjoys hanging around the Astronomy Club because of Mihoshi, Sayo and Hime, whom he sees as all very attractive, and is jealous that Saku is surrounded by beautiful girls. However, he also enjoys astronomy and actively participates in stargazing events. His photography skills tend to come in handy in promoting the Astronomy Club.