Stella Women's Academy, High School Division Class C³

Yura Yamato joins Stella Women's Academy's high school division and is approached by Sonora Kashima to join the C³ club, which focuses on military survival games. As the club's new head, Sonora oversees the group's activities along with other members Karila Hatsuse, Honoka Mutsu, Rento Kirishima, and Yachiyo Hinata. Karila is a part-Japanese second-year student, while Honoka is known for her exceptional marksmanship skills.