Kazuha Toyama is a high school student from Osaka and childhood friend of Heiji Hattori in the anime series Detective Conan. She is known for her spirited personality and strong sense of justice. Kazuha often finds herself involved in cases with Heiji and Conan, providing assistance in their investigations. She is skilled in Aikido, which she uses to defend herself and others. Kazuha harbors feelings for Heiji, adding a romantic subplot to the series. Her interactions with Heiji often provide comic relief, as well as emotional depth to the storyline.