Blue Sonnet

Sonnet, a cyborg esper, is a highly advanced warrior from a difficult past. She's been sent to Japan to monitor Komatsuzaki Lan, who's believed to be influenced by the powerful esper Akai Kiba, also known as Crimson Fang. Lan, a quiet and somewhat isolated girl, begins to exhibit signs of Crimson Fang's influence after meeting Sonnet, while also struggling to maintain her own humanity.