Something goes horribly wrong with Naomi, leaving her comrades dazed and confused. It's clear there is more to it when they're told to keep quiet. Kasane divulges a shocking secret to Yuito, and the Seto and Kyoka platoons face an unexpected enemy.

As Karen's revolt gathers steam, Yuito and forces loyal to New Himuka are hard-pressed. Fubuki takes command of a band of loyalists and orders Yuito to check that his father is safe. Karen publically reveals a motive, and Yuito has a shocking encounter.