A Perfect Day for Love Letters (Japanese: 恋文日和, Hepburn: Koibumi Biyori) is a Japanese manga short story series written and illustrated by George Asakura.

The stories were originally published by Kodansha in the shōjo (aimed at teenage girls) manga magazine Bessatsu Friend, and collected in two bound volumes.

[1] A live action film adaptation premiered in Japan on December 4, 2004.

[4][5] The series is licensed for an English language release in North America by Del Rey Manga.

[7] Anime News Network's Carlo Santos criticizes the manga for its characters quirks for being annoying and "occasional clutter layout".