Kei Shikina

Gender: Female
Hair Color: Blonde
Eye Color: Blue

Kei Shikina is the supervisor of the Nayuta Lab. She is the person in charge of Ataraxia’s technology and is also Hida Reiri’s best friend.

Shikina is a short, petite woman with blonde hair (more orangish in anime) and blue eyes. She is usually seen wearing her glasses and her uniform. Compared to her best friend, she has a more childish build that makes her look younger.

Kei is calm and studious, hardworking and intelligent. Thanks to that, she is the chief of Nayuta lab. Due to being very shy or just from her hobby, she prefers not to speak and uses keyboard which using to communication with others except Reiri. She later becomes jealous that Reiri spends so much time with Kizuna, rather than with her.

While rarely seen, Kei has a surprisingly perverted side to herself. She has multiple time expressed an interest in observing Kizuna doing Heart Hybrid with other women and sometimes recorded them.

(Source: Masou Gakuen HxH Wikia)