Mika Asagi is a 13-year-old girl, & the daughter of Maria Asagi & Caldwell Asagi, AKA Big Daddy, the former head of Millennion. Millennion is a criminal organisation with a huge tree of connections to various areas around the globe & a center command called The Family.

Mika was to be the heir to Millennion, but Big Daddy was killed shortly after her birth. Since then, she's lived an ordinary life with Maria & her butler: Tokioka.

Mika has short silver hair & teal eyes. She is a short, petite girl with a youthful appearance & fair skin. She wears a long-sleeved, slim-fit black minidress with turtleneck, under a red jacket with black stockings & red shin-boots.

Like her mother, Mika is kind, gentle, optimistic & strong-willed, but also dishes out sarcasm from time to time.