五十嵐　智恵

She is a part-time swimming instructor at the school that Takeshi attends, and is an all-around sportswoman. She is also a resident of the company dormitory where Yae and Karin live. Takeshi had never imagined that Chie-sensei was a candidate for his maman. To begin with, Chie was the daughter of a city councilor, and was also involved in the landowner business. She was also involved in the loan shark business, and was therefore well connected to the underworld. She is also a close friend of Masuzoe Seira and Mishima Sae. Her Somber expression makes it difficult to tell whether she is a good person or a bad person, but she is surprisingly loyal and has a strong sense of duty, Her motto is "Be strict with others and strict with yourself." [From official site]