Movie · 2015
Is Our Little Sister based on a book?
Quick answer
Yes. Our Little Sister is based on the manga Umimachi Diary by Akimi Yoshida (2006).
The movie was released in 2015.
The manga behind Our Little Sister
Umimachi Diary
Manga by Akimi Yoshida · first published 2006
Common questions
Is Our Little Sister based on a book?
Yes. Our Little Sister is based on the manga Umimachi Diary by Akimi Yoshida (2006).
Who wrote the book Our Little Sister is based on?
Umimachi Diary was written by Akimi Yoshida and first published in 2006.
Should I read the book before watching?
If you like knowing the full story and characters first, read Umimachi Diary before you watch. Adaptations often change or cut plotlines, so the book is a different experience even if you've seen the movie.