An Assassin's Bullet Cannot Kill a Kindred Spirit.
On their way home, Yura and Sonora come under attack by a sniper using an illegally modified airsoft gun firing dangerous rounds. As Yura attempts to go after the sniper herself, Sonora injures herself protecting Yura from running into the path of a car, leaving her with a twisted ankle which puts her out of the tournament. Feeling guilty, Yura becomes determined to take Sonora's place in a the tournament, spending all of her free time looking up strategies and putting the others through an intense training regime. Upon arriving at the tournament, where they meet Seikou Academy's full team, Yura becomes suspicious that Rin might be the sniper.
Aired 16/08/2013EP 7 - An Assassin's Bullet Cannot Kill a Kindred Spirit.
Stella Women's Academy, High School Division Class C3
Yura Yamato has just arrived at the high school division of Stella Women's Academy, when Sonora Kashima invites her to join a club called "C³". Sonora is the third-year student who became the new head of this club for military survival games. The other members include two second-year students (part-Japanese Karila Hatsuse and G36K-wielding Honoka Mutsu) and two other new students (Rento Kirishima whose family runs a Japanese sweets shop and the really short Yachiyo Hinata).
(Source: Anime News Network)