The sister of Touko from Kara no Kyoukai. She was referenced by Touko there, but her only real appearance in anime was in the nonexistent Tsukihime anime. She's the girl who gives the MC his glasses. She also appeared in Carnival Phantasm. In Tsukihime she has red hair, but, similar to Fate/'s Archer and the Matou family, that's due to magic. Her real hair color is brown, as shown by Mahoutsukai no Yoru, a visual novel that tells of her past. She is one of Type-Moon's main girls (together with Arcueid, Saber, and Shiki Ryougi), and she's the only main character that uses true magic. She's also the oldest, yet youngest, main girl, considering her story was written before even Tsukihime, yet not released until 2012. Aoko was the template from which characters like Rin Tohsaka were born.