An outstanding graduate of School of Primary Defense of Mankind, the chief assistant of the Investigator Operator Vertin. The world depicted in her poems is colorful and ideal, even though she has never seen the real world. Even so, her italian blood is strong. And Sonetto is eager to learn everything the world has to offer.

Sonetto has long orange hair and dark green eyes. She grew up within the St. Pavlov Foundation, with the education and training she has received being of top class.