Synopsis

Nagara, Nozomi, Asakaze, and Rajdhani persist in their quest for uncharted realms. A disturbing pattern emerges: students begin to vanish, their bodies later discovered encased in obsidian-like shells, seemingly frozen in time. Driven by this unsettling development, Pony implores Mizuho to investigate. In doing so, Mizuho reveals a previously unknown facet of her abilities to Nagara.