Atsuko Yasumori is a member of Yasumori family. She brought Tokujirou to Ozaki clinic when he was bitten by Nao. When the war between humans and shiki broke out, she was helping the other villagers. She found out about Takae's death and brought Toshio and the others to the clinic. She was shot and killed by Yasuzou Muramatsu and Kazuko briefly mourned her. She is the 9th and last Yasumori to die. With her death, Yasumoris went extinct.