Cipher Academy, Volume 4: A Distant War Is Where The Heart Is (Cipher Academy #26-34)

The race to win the 50 billion morgue prize has finally begun! Iroha and his class A mates are up against class E, which specializes in infiltration and disguise. However, it seems like class E's leader Shitai Kubinashi is someone who has a deep connection to the Toshusai faction. As the battle to win the coveted cryptocurrency heats up, Tayu Yugata takes the lead!