Miyuki Nanase (七瀬 美雪 Nanase Miyuki) is the best friend/love interest of Hajime Kindaichi.
Miyuki is a pretty girl with upper-back length brown hair that has two light pink hair pins clipped on either side with bangs swept on either side, brown eyes and a tall slender body.
Due to her beauty, many male characters tend to hit on her, much to Hajime Kindaichi's dismay.
Miyuki has a strong personality where she helps people in need and she is the hope which Hajime Kindaichi clings onto when in disarray. Even though she spends time with other guys, she still loves Hajime where they lead a carefree life where Hajime thinks of pervert things about Miyuki and Miyuki keeps hitting, slapping or scolding him.
Miyuki is "Hajime-chan"'s childhood friend and next-door neighbor, although many question why a model student like Miyuki is friends with a slacker like him. Deep down inside, Miyuki feels Hajime is not an idiot, and they seem to have a love that neither has yet fully expressed.
Her birthday is November 24, as stated in "The Murderer From the Screen". She possesses remarkable logic and perception, as demonstrated by her 'filling in' for him to solve a murder mystery in the live-action series while the latter was being warded for appendicitis, although she is obviously not as gifted as he is.
Miyuki is the president of Fudo High's student council. Miyuki was first introduced to the Mystery Club by Ruiko Sakuragi along with Hajime, she serves as the president of the Mystery Club after Sakuragi's death.
Miyuki was first featured in Episode 1 when she comes to scold Hajime Kindaichi for skipping classes, not studying, etc. Her friends comment that why a excellent student like Miyuki should be friends with a slacker like him. In the first case, Miyuki is hit on the head and admitted to the hospital. Hajime gives up the case stating that Miyuki is more important to him than anything, but Isamu Kenmochi fills him with wisdom words and Hajime solves the case for Miyuki's sake. From there onwards, she accompanies him in all most all adventures.
- The name Miyuki means "beautiful" (美) (mi) and "snow" (雪) (yuki).
- Miyuki's surname Nanase means "seven" (七) (nana) and "swift current, rapids" (瀬) (se).