Natsuno, Kaori, and Akira exhume Megumi's grave, finding it empty. Kaori is attacked by a shiki but Natsuno saves her and kills the assailant. They bury the body in Megumi's grave, but it vanishes by morning. Seishin grows suspicious of Sunako's true nature. That night, a mysterious girl visits Natsuno's home, asking to see him. 

Tensions escalate as Natsuno becomes increasingly vigilant, suspecting that the shiki are targeting him. He arms himself and warns his friends to be cautious about allowing strangers into their homes. Meanwhile, the shiki, led by Tatsumi, plan a coordinated attack to eliminate those who threaten their existence.