Miyauchi Renge: First grader, the youngest of the five students at Asahigaoka Branch School. She only wears the shirt she wore camping on sunny days. Koshigaya Natsumi: Seventh grader at Asahigaoka Branch School. When she goes camping, she gets worried that she'll be bitten by too many mosquitos and run out of blood. Ichijo Hotaru: Fifth grade transfer student from Tokyo. Of everyone who went camping, she's the one who is least bothered by bugs. Koshigaya Komari: Eighth grader at Asahigaoka Branch School. Even while camping, she makes sure to steel herself to be a responsible older sister.