Mutsumi Urushibara

Mutsumi Urushibara (漆原睦 Urushibara Mutsumi), is the counselor of the school Katsuhira is attending. She's a mysterious woman who's almost always seen wearing a white coat.

Appearance
Mutsumi has blue eyes and dark raven black hair. She has a beauty mark under her left eye as shown in the beginning of Episode 2. She usually wears a lab coat and dark black waist-high pants with a white blouse.

Personality
Cold and emotionally detached, she seems to hate everybody but Sonozaki.

Noriko Sonozaki
Out of all the students in the school, she only favors Sonozaki who she calls "Nori-Chan". She even has a Sonozaki key-chain attached to her mobile.

Trivia

 * Her Seiyuu shares the same surname as Noriko Sonozaki.
 * She has Noriko Sonozaki keychain on her smartphone

It is hinted that she has feelings for Noriko Sonozaki