Merry Christmas on the battlefield S01 E11

Rika Mayama (as Akiko "Akonee" Yamamoto) Ayaka Yasumoto (as Karen "Su-san" Suzuki) Aika Hirota (as Himari Serizawa) Mirei Hoshina (as Mari Nishinozo) Rina Matsuno (as Mizuho Yoshida) Hinata Kashiwagi (as Chihiro "Chi-chan" Mori) Kaho Kobayashi (as Tomoe "Tomo" Takada) Riko Nakayama (as Akane Kudo) Masahiro Koumoto (as Professor Tachibana)