Gouriki plays the lead character Kamiwatari Kotone who was a geigi in Kyoto sentenced to five years in prison (the lowest sentence for this crime) for the murder of her fellow geigi while in a drunken stupor. Although all the evidence pointed to Kotone as the murderer, she insisted that she did not do it but to no avail. During her imprisonment, Kotone is bullied by other inmates but doesn't think much of it because she had been used to the tough disciplinary actions by her seniors in the geigi world. Unknown to the others, Kotone has a lot of strength, can easily fight anyone with aikido, pretends to be stupid but is actually very smart, fluent in English and French and has very good hearing. At the end of the drama, the reason why Kotone was framed for the murder will also be revealed.
With regard to her character, Gouriki described her as someone who is quiet but has a somewhat eerie air around her and her wickedness hidden within. As such, she is very excited over how to project the contrasting sides of Kotone through this drama which will show the strengths and frightening side of women through their survival battles behind bars.
Sources: Nikkansports / Oricon