So... is Natsu no Arashi! finished or not?
NO, it is not finished.
Why?
The anime finished before the manga:
Anime finished: December 28, 2009
Manga finished: September 22, 2010
MangaUpdates contains information about the anime adaptation and indicates that it is incomplete.
Watching Order (by release date)
Here you have all the anime relations we detected ordered by release date, so you can see the reason for this status in context and also use it as watching order.
The mangas and the non-core contents are excluded by default, but you can enable them by clicking the buttons below:
Natsu no Arashi!
Summer Storm!
Anime - Base
Release date: April 06, 2009
Natsu no Arashi! Akinaichuu
Summer Storm! Open for Business
Anime - Sequel
Release date: October 05, 2009
Synopsis
Natsu no Arashi! tells the story of Hajime, a young boy who moves to the countryside and quickly becomes smitten with Arashi, a waitress at a local cafe.
He soon discovers that Arashi is not who she appears to be, possessing a unique ability to manipulate time.
When Arashi realizes Hajime can help her unlock this power, she enlists his aid in a mysterious mission related to her past.
Together, they embark on a journey through time, facing challenges and uncovering secrets that will change their lives forever.
Their adventure reveals that Arashi isn't the only one with extraordinary abilities, hinting at a larger network of individuals intertwined with the past.