The Foot Soldier Is the Queen of the Battle.
Earlier on the year, as the club finds itself running low on BB pellets, the girls enter a Field Queen Contest, which contestants compete with both beauty and airsoft, to try and win some more. After various rounds of airsoft against various players, including Rin, Aoi and Aira, the final pits Karilla against Honoka, which Honoka manages to win by using her sex appeal to earn the popular vote.
Aired 27/09/2013EP 13 - The Foot Soldier Is the Queen of the Battle.
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)