Also known as: 蒼井セナ
Aoi Sena is a supporting character in ChäoS;HEAd, a visual novel by 5pb. and Nitroplus. She is a highly intelligent and stoic high school Delinquent and has a deep interest in the mysterious events surrounding Nishijou Takumi.
She is often depicted with long Purple Hair and Purple Eyes. She wears the female Suimei Academy School Uniform, consisting of a brown Blazer with an untucked, white open Collared Shirt, a plaid Purple Necktie, and a plaid Purple Skirt.