Miyabi Oomichi

A student in the GA-1 class. Nicknamed Kyouju (professor) due to her intelligence, she is a mysterious person who never smiles and somehow manages to store everything in her jacket. Despite her stoic mannerisms, she is still quite playful and likes to help out her friends. She addresses everyone in a very samurai-formal, but awkward (in the modern Japanese context) manner by attaching "-dono" in place of "-san". Since she likes the color black, she'll use it in all of her artworks.

(From Wikipedia)