|Manga Debut||Chapter 90|
|Anime Debut||Episode 49|
This attack was originally created by Yamamoto's father while saving his friend in the middle of a typhoon. While training, Yamamoto also mentioned that it was the easiest of the eight forms for him to learn, and, as a result, uses it far more than any other in the series. In the future, Yamamoto improved Shinotsuku Ame, using it to surround himself in Rain Flames.