Aki Tsukino (月野 亜紀)Ishiyama's detective partner who is a bit clumsy and usually hungry.
During her childhood, she was bullied a lot because of her height, which caused her to develop a violent split personality. Tsukino later began attacking high school girls under the influence of her other personality and soon targeted Haruka. However, Haruka was able to get her feelings across to the true Tsukino, who overcomes her other side and turns herself in.
