As the earthquake's aftermath leaves the four survivors isolated, Takahaki's pointed accusations sow fresh doubts in Fubuki about Shinichi's feelings toward the junior girl. The resulting tension fractures the childhood bond between Fubuki and Shinichi, forcing each to question loyalties amid the confined ruins. Shinichi, caught in the middle, struggles to make sense of the shifting suspicions and strained interactions that now define their uneasy refuge.