Birthday: July 7th Age: 9 (when humanity disappeared), 11 (present) Anna is the youngest of the group and likes to act cute, sometimes referring to herself in the third person and often making crude jokes. She is very afraid of lightning and thunderstorms. She used to live in the Asakusa area of Tokyo with her parents and a cat named Bonkichi. One of Anna's teachers claimed that she has "Savant Syndrome", characterized by incredible potential within a specific area — in her case, Math. She also has a very good memory. After her mother's disappearance, Anna survived awhile with her father until an attack of the Phantoms that left her and Sanae as the only survivors of their group. To cope with the trauma of losing both her parents so close to each other and to her own birthday, Anna tells herself that she will never grow older until her parents return. After spending almost 2 years with Sanae, Yaeko and Masashi, she is finally ready to see her birthday as a happy occasion again. An older Anna from a different timeline participated in the discovery of time travel, along with that timeline's Masahi, Yaeko and Sanae.