第 3 集: Shion 倖免於寄生蟲感染並就 No.6 警告與 Nezumi 當面對峙
Soon after escaping from No. 6, Shion finds that he is also infected. The parasite is extracted by Nezumi from his body and he survives, but not without taking its toll on his body. Having recovered, Shion is taken by Nezumi to a hotel whose owner rents her dogs to keep the guests warm while sleeping where he finds that Nezumi contacted his mother and she sent a message to him. By analyzing the parasite, Shion concludes that when spring comes, a large number of them will emerge and kill their hosts, causing turmoil in the city. By learning that such great tragedy will befall the place he loathes, Nezumi rejoices, but when Shion states that the inhabitants of No. 6 must be warned, he claims that if he insists in helping them, he will start treating him as his enemy. (Source: No. 6 Wiki)