A Perfect Day for Love Letters(恋文日和Koibumi Biyori) is a Japanese manga short story series written and illustrated by George Asakura. Each story depicts a relationship that revolves around the use of love letters. The stories were originally published by Kodansha in the shōjo (aimed at teenage girls) manga magazine Bessatsu Friend, and collected in two bound volumes. A Perfect Day for Love Letters received the Kodansha Manga Award for shōjo manga along with Oi Piitan!! by Risa Itou in 2005.