Shizu

Shizu works as an attendant for Akesato in Shimabara.

Story
Shizu is a young girl who works as an attendant for Akesato, later known as Sato, in one of the prostitution districts in Edo. She has a very adult mind and a running gag in the series is that no one really seems to know just how old she is; though she appears young, she tells Tominaga Sei that she’s been working for over 18 years!

Shizu runs errands for Akesato and, according to her, also keeps Akesato's clients from going astray. After Akesato is freed from working as a prostitute, it is unknown what becomes of Shizu.