If you are referring to different characters with these names, you might find these helpful:
: In this Kon Ichikawa-inspired film, Koharu (played by Yu Aoi) is a central character navigating a complicated family dynamic. A detailed review is available at Screen Daily . About Her Brother (Otouto) | Reviews - Screen Daily koharu aoi
: This series features Aoi Yukimura as the protagonist. While there isn't a main character named Koharu, the series is a popular mountain-climbing drama. You can find episode details on the Encouragement of Climb Wikipedia page . If you are referring to different characters with
: The Tesagure! Bukatsumono Wikipedia page lists episode-by-episode summaries that highlight interactions between Aoi and Koharu , such as their discussions on recycling old footage to reduce production costs. Other Notable Appearances While there isn't a main character named Koharu,
Depending on what you are looking for, these articles and resources provide helpful insights into their roles and the series: