Ayumu Watanabe is a Japanese anime director. After joining Shin-Ei Animation, he directed multiple Doraemon anime films. As a freelancer, he also worked on numerous anime adaptations such as Space Brothers, After the Rain, and Komi Can't Communicate.

After the Rain is a Japanese manga series written and illustrated by Jun Mayuzuki. It was serialized in Shogakukan's Monthly Big Comic Spirits magazine from June 2014 to November 2015, and later in Weekly Big Comic Spirits from January 2016 to March 2018. Its chapters were compiled into 10 tankōbon volumes.