Narumi Kyouka

Narumi Detective Agency's deputy director. Kyouka is the daughter of Narumi Seiji, who was believed to be a great detective who had gone missing while Kyouka was studying abroad. When she learned of her father's disappearance, she returned to Japan to run the family office in his stead, as the acting director.

Kyouka has a naive side and often receives requests out of the kindness of her heart rather than her monetary interests. Her abilities as a detective are in fact lacking, therefore she relies heavily on her new worker Kyousuke for the actual case investigations.

Narumi had known Kyousuke since her childhood. She always quarrels with him when they meet, but in reality she relates to his situation and wishes to get along with him.