Ibara Miki

Ibarra is an ibarakidouji, which is a kind of oni yo-kai, similar to her brother Rintarou. She has long, elegant hair that is minty light blue styled into a loose braid, and she has blue eyes. Two horns also protrude from her forehead. She wears a red kimono with some flower patterns on it, and red nail polish. Her earring is in the shape of a rose with a braided tassel hanging from it.

Like Rintarou, she has one eye that has a black sclera that she keeps covered with her hair. She often wears sweaters and skirts, and has owned colorful kimonos when she was younger.

(Source: Youkai Gakkou no Sensei Hajimemashita Wiki)