|Anime||Episode 1: Saucer City|
| (Japanese) Haruka Yoshimura|
(English) Christine Marie Cabanos
Koharu Shiihara (椎原 こはる Shiihara Koharu?) is one of the main characters of the Sora no Method series.
Koharu has black hair that she wears in two small braids near the ends. Her eyes are purplish-blue. She is usually seen in her school uniform that she wears buttoned up with black over-the-knee socks and brown shoes. It is shown in a flashback in the first episode that when Koharu was younger, she wore glasses.
Koharu is a kind, sweet and caring person towards others. This is mainly shown when she remained at Nonoka's side when Yuzuki and Shione were furious at Nonoka for calling the saucer. Koharu is also sometimes clumsy.