This episode focuses on Chihiro's little sister, Mero. She and her classmates, Ichie Shinoda and Miko Yasaka, become curious about the strange actions of their teacher, Mizuki Yamanouchi, suspecting she may be a zombie. They soon learn Yamanouchi had been secretly keeping a pet crocodile and feeding it at school. Later, as they discuss stories about zombies, Mero recalls about her late mother who she remembered having cold hands...