The film originally planned a limited two-week run from September 6 to 20.
Since the film’s website has revealed bonus items for its fourth and fifth week theatergoers, it is expected to run at least two more weeks in Japan.
The fourth week theatergoers (September 27-) will receive an original mini colored paper drawn by the character designer/chief animation director Akiko Takase, then the fifth week audience (October 4-) will get one of the four newly-written novel books (same items for the first three weeks) randomly again.