Arashi no Yoru ni (あらしのよるに?, lit. One Stormy Night) is the first in a series of children's books authored by Yūichi Kimura and illustrated by Hiroshi Abe. In 1995, the book won the 26th Kōdansha Literature Culture Award and the 42nd Sankei Children's Literature Culture Award.
When "Arashi no Yoru ni" was published in 1994, Kimura had no plans to continue the story as a series. But due to the popularity of the story and receiving considerable encouragement, he continued the story through five more books, ending with "Fubuki no Ashita (After the Snowstorm)." As the series became more popular, a compilation called "Shiroiyami no Hate de" was released and a movie adaptation was produced. Soon after, Kimura wrote the seventh book, "Mangetsu no Yoru ni", finally ending the series.
Arashi no Yoru ni was published in Japanese textbooks by Mitsumura Tosho Publishing. In 2005, Gisaburō Sugii directed an animated film adaptation covering all seven books in the series. A CG-animated anime television series by Sparky Animation, Arashi no Yoru ni: Himitsu no Tomodachi (あらしのよるに ひみつのともだち One Stormy Night: Secret Friends?), began airing in Japan from April 4, 2012 to September 26, 2012.