Gender: Female Guest's senior. She teaches Guest the ropes of police work. She loves being out in the field and gets serious when the situation calls for it. She is very clingy with Guest and is quite fond of Kotone. The quintessential energetic girl. She often gets scolded by the Section Chief. She slumps when reprimanded, but being a positive thinker, she bounces back immediately. The bigger the case, the more fired up she gets.

Gender: Female Senior to both Koharu and Guest. Koharu is very attached to her. Highly capable and a perfectionist, she is relied upon by her juniors. Serious-minded and doesn't care much for field work. Her catchphrase is "I'm just doing my job." She is unusually kind to Guest. She is a bit strict with other juniors. She doesn't particularly enjoy big cases or helping out with rookie tasks. She plays the straight man to Koharu's antics.