Shizunai Chihiro

Goal: To build her physical strength and her self confidence.

A reserved and earnest office lady who works for a cosmetics company. However, her work is causing her stress, and probably due to that stress she masturbates often.

Her middle school, high school, and college were all girls schools, so she has difficulty dealing with men.
She has been friends with Mao since her university days, and when Mao tells her she is too thin, because she is so shy and always stressed, she forces her to go to the gym.

She uses this opportunity to improve her figure and overcome her shyness. Since Shinichi is Mao's cousin, she has a sense of security around him.