Chika Yamada

Chika Yamada (山田 千夏 Yamada Chika) is Yamada's younger sister, who is not affected by Yamada's perverted nature. She is very popular as she often uses her cuteness to get boys to give her whatever she wants, a trait she inherited from her mother. This experience allows her to clearly see what is going on in Yamada's love life.

Chika is voiced by Asami Shimoda (Japanese) and Emerick Jade (English).

Trivia

 * Her name Chika means "thousand" (千) (chi) and "summer" (夏) (ka).
 * Chika's surname Yamada means "mountain" (山) (yama) and "field, rice paddy" (田) (da).