Nijuu-Mensou no Musume  

20faces, Chiko, CHIKO, Heiress of the Phantom Thief, Chiko, l`héritière de Cent-visages, Daughter of 20-Faces, dotf, The Daughter of Twenty Faces

The wealthy mikamo family's daughter, chiko, lives with her aunt and uncle after losing both parents. her aunt seeks to inherit the family wealth, so she gives chiko poisoned food. eventually, chiko is kidnapped by the nijuu mensou (20 faces) and decides to join his clan.