Ame-warashi

雨童女

The Ame-warashi is also referred to as a rain sprite or rain maker. She is a proud, high-ranking spirit who maintains a very hostile attitude toward humans because "humans have no care or regard whatsoever with living nature". She approaches Yūko to request Watanuki's service in order to save someone at a park containing hydrangeas. In the anime, she is depicted as a good, protective friend of the Zashiki-warashi.
She also possesses the ability to detect differences in characters and likely special abilities, as suggested by her ill feeling toward Himawari and the "refreshing" or "pure" scent she detects emanating from Dōmeki. She appears again alongside the Zashiki-warashi to see Watanuki and remains hostile toward him, although she also makes a cryptic remark regarding Watanuki's true nature.
Her hair is red in the anime, though there are colored Clamp pieces that depict her hair as blue. The concept of an Ame-warashi is based on a spirit from Japanese folklore.