Chihiro Sengoku is an art teacher in the Pet Girl of Sakurasou franchise.
Chihiro Sengoku is created by Hajime Kamshida who has no information regarding any inspiration used to create her. She is voiced by Megumi Toyoguchi.
She is a lazy woman as demonstrated when she has Sorata take care of her cousin, Mashiro. She can be quite promiscuous and tactless when she talks about dirty things in public or revealing her cleavage to attract some men.