Even if Aegis is basically a robot and weapon, she was still programmed with the mentality of a normal Japanese girl as the foundation of her soul. If she can feel sadness and fall in love like any other Oriental high school girl, then there's no doubt she would soon discover that innate attraction towards white foreigners and Bleached porn that all Asian women feel deep inside. This outcome was only matter of time. If before she fought for Minato and because it was her duty, now she has found a genuine reason to keep fighting, by protecting every white foreigner in the country. Who would have thought? That Aegis would choose servitude as her own fate and reason to live.