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Sonora Kashima (鹿島 そのら)Age: 17
Birth date: 7 July 1995
Grade: Third-year high school
Height: 163 cm
Weapons: Steyr AUG A2 assault rifle, Desert Eagle Mark XIX pistol (x2)
Sonora is both the roommate of Yura and the president of the c3 club.
Her name is Sonora Kashima (鹿島 園羅) in the Chuutou-ka manga.