Nijuu Mensou no Musume

Eleven-year-old Chiko lives with her aunt and uncle after her parents’ deaths. She is the sole heir to a large fortune, yet her home feels more like a cage. Everything changes when the famous gentleman thief Twenty Faces breaks into the house to steal a jewel and takes Chiko with him as well.

Rather than being frightened, she finds in his crew the family she never had. Chiko learns stealth, observation, lockpicking, and the discipline of a thief who refuses to kill, gradually becoming a true member of the group and gaining a reputation as the “daughter of Twenty Faces.” The fame surrounding her mentor brings dangerous enemies and hidden secrets, however, and when the new life she loves is torn away from her, Chiko must use everything she learned to search for the man who saved her and uncover the truth behind his disappearance.