Kobeni Yonomori is a high school girl who lives with her mother and older sister Benio. She receives quite the surprise on her 16th birthday—a fiancé and a sister-in-law she never even knew she had. As a result of an arrangement that her late grandfather made, Hakuya Mitsumine and his younger sister Mashiro have moved from their countryside home to the Yonomori household in order to deepen their relationship with their new family members.
The Yonomori residence and most of the rest of the locations in the show are set in Koriyama in Fukushima Prefecture. Many storefronts and intersections were reproduced exactly, although some businesses have closed or changed hands in the years since.
In case you’re curious, Koriyama is safe to visit as of 2023, and radiation caused by the 2011 Fukushima Daiichi accident should not be a concern for potentially touring fans, with the possible exception of the train stations near the coast which serve as the source of several character names. It was not inside the evacuation zone, and served as one of several relocation towns for those affected.
