Karen's machinations lead to a battle between comrades until a new threat arrives, claiming all around it. Yuito and company lick their wounds as they learn about Karen's motives. Others swarm into Suoh, and Kasane and company awake in a strange place.

Kasane and company wake up to a shocking reality and strange encounters. Kasane learns about the emptiness in the sky and a way to stop it. Yuito and Kasane confront each other after she discovers the real reason for Karen's rebellion. Kasane goes to Seiran with other FSC members.