Aki is a very stoic person. She acts mature and sometimes blunt to the point of rudeness when she is with her fellow Devil Hunters, but she is actually fairly softhearted. Has a tendency to get attached to others easily, and hates to see people get hurt, especially her close friends. She doesn't like people who do not take their job as Devil Hunters seriously or fight for a superficial and material goal like money. Aki hates all Devils equally and is determined to kill the Gun Devil.