Ran Mouri, a high school student and childhood companion of Shinichi Kudo, combines a fierce sense of justice with unwavering compassion. Her parents, Kogoro Mouri and Eri Kisaki, separated during her childhood, sparking her relentless efforts to mend their fractured relationship despite their clashing stubbornness. At ten, inspired by national karate champion Satoru Maeda, she immersed herself in martial arts, rising to captain her school’s karate club and claim regional championship titles by sixteen. Her father’s judo training further honed her combat versatility, amplifying her raw strength, agility, and reflexes—traits enabling feats like evading gunfire and shattering solid objects. A pivotal New York trip with Shinichi thrust her into a confrontation with Vermouth, a Black Organization operative disguised as a serial killer. Defying peril, Ran rescued Vermouth from a fatal fall, earning the moniker “Angel” and unwittingly securing the assassin’s conflicted mercy. This encounter crystallized her latent romantic feelings for Shinichi, though her self-consciousness complicates open expression. After Shinichi’s sudden disappearance, she shelters Conan Edogawa—unaware he is her childhood friend in a child’s form—treating him as a surrogate sibling while intermittently questioning his uncanny resemblance to Shinichi in intellect and appearance. Conan, aided by allies like Ai Haibara, meticulously crafts alibis to deflect her suspicions. Ran shoulders domestic duties at the Mouri Detective Agency, compensating for her father’s negligence by managing finances, cooking, and client interactions. Her temperament oscillates between nurturing warmth and fiery impulsiveness when defending others, often resolving misunderstandings with karate-backed threats. She champions empathy even in crises, exemplified by sparing both Vermouth and a hostage-taker from lethal force, prioritizing redemption over retribution. Paradoxically, her combat prowess falters against supernatural fears, freezing her in terror during ghostly encounters. Shinichi’s prolonged absence strains her resilience, fueling quiet grief tempered by hopeful determination, which she channels into caretaking for Conan. Friends like Sonoko Suzuki, Kazuha Toyama, and Masumi Sera anchor her emotionally, while her bond with Shinichi evolves from playful camaraderie to charged romantic tension, culminating in mutual confessions during critical moments like the London and Crimson School Trip arcs. Beyond the central narrative, Ran occasionally aids cases in spin-offs like *A Challenge from Agasa!* but remains shielded from the Black Organization’s shadow, reflecting Conan’s protective stance. While films and non-canon media sometimes cast her as a damsel, her core portrayals emphasize martial mastery and moral fortitude, underscoring her agency in balancing vulnerability and resolve.