kuchiba aoi

One of a pair of twins, presumed to be of Japanese origin, who were held captive and brutally trained to become members of the Adepts from childhood. While Sasha endured with Olja's support, Yuu and Aoi had to rely on each other, which ultimately led to their downfall. This culminated in Yuu apparently becoming a homicidal maniac and an extremely powerful Qwaser. Aoi reached out to Sasha through a love letter, begging him to find and stop her brother from his rampage. Sasha agreed to this request, leading him to face his strongest adversary yet.