Synopsis

Kasane and her companions awaken to a world irrevocably altered, marked by unsettling occurrences. She discovers the source of a terrifying emptiness in the sky, and a potential means to quell it. A rift develops between Yuito and Kasane after she uncovers the truth motivating Karen's rebellion. Driven by a sense of purpose, Kasane journeys to Seiran, accompanied by fellow members of the OSF.