The main female lead; a headstrong girl, often compared to a wild rose. Chizuru is an ordinary sixteen year old high school student, until her mother abandons her and leaves with a debt with 100 hundred million yen. Her debt however, is payed by Mitsuru Kuze, a third generation yazuka boss. Chizuru must pretend to be his fiancee in return.

Due to parental abandonment by her father and later her mother she has trust issues, her motto being, "Don't trust anyone."