Cipher Academy, Volume 5 (Cipher Academy #35-43)

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!