Kurumi

Created by Dr. Ayanokouji and powered by a Mark II Heart, this powerful Steel Angel awakens through Nakahito's kiss, instantly pledging her absolute devotion to him. As the eldest sister, she displays a protective, maternal side toward her siblings, though her intense, manic obsession with her "Master" often leads to chaotic behavior. Despite her overwhelming combat strength and loyalty, her clumsy personality frequently complicates her missions, making her a wild and unpredictable force.