OVA
Description
Ran Mouri is a high school student at Teitan High School and one of the central figures of the Detective Conan story, though in the OVA The Osaka Okonomiyaki Odyssey her role is largely a supporting one. The special takes place after the airship incident from the film The Lost Ship in the Sky, with the group staying in Osaka. While Conan spends the night at the Hattori family home, Ran remains at a hotel with the others, and the main plot follows Conan, Heiji Hattori, and Kazuha Toyama as they try to reach an okonomiyaki restaurant before Conan must leave the city. Ran appears within the larger group of visitors rather than driving the episode's mystery herself.

In terms of background, Ran is the daughter of private detective Kogoro Mouri and lawyer Eri Kisaki, who have been separated since her childhood. She has been close to Shinichi Kudo since they were young children and later becomes his girlfriend. Because her father is often careless and her mother lives apart from the family, Ran takes charge of the Mouri household, handling the cooking, cleaning, and much of the daily care for those around her. When Conan comes to live with her family, she treats him like a younger brother without realizing that he is actually Shinichi in a shrunken form.

Her personality is warm, patient, and nurturing, and she genuinely cares for the people close to her. She has a strong sense of justice and can be very brave in dangerous situations, yet she is also emotionally sensitive and cries easily. She has a pronounced fear of ghosts and the supernatural, which contrasts with her usual composure. When angered, she can be intimidating, using her martial arts ability to subdue or restrain others, though she is generally kind-hearted and quick to help anyone in trouble.

Her main motivations center on her loved ones. She waits for Shinichi to return, trusting his promise even though the separation causes her emotional pain. She also hopes to bring her parents back together and frequently tries to create chances for them to reconcile. In daily life, she is motivated by a strong sense of responsibility to look after her father and Conan.

In her relationships, Ran is deeply devoted to Shinichi, and her friendship with Sonoko Suzuki is one of her closest, with Sonoko often teasing her about her feelings for him. She is also friendly with Kazuha Toyama and Heiji Hattori, sharing a similar situation of being close to a childhood detective friend. With Conan, she acts as a protective older-sister figure, and she has occasionally suspected that he is more than an ordinary child, though she never gains definite confirmation.

In terms of development, Ran is portrayed as a dependable and mature teenager who becomes the emotional anchor of her household. Her experiences in dangerous situations repeatedly show her choosing to protect others even at personal risk, and her patient wait for Shinichi reflects her loyalty and steadfastness.

Her most notable ability is karate. She is the captain of her school's karate club and has won championships, and her physical strength, agility, and reflexes are remarkable, allowing her to break doors, overpower armed attackers, and react quickly in emergencies. She also has sharp instincts and keen observation, which sometimes bring her close to uncovering the truth about Conan.