The film 'Doraemon: Nobita and the Birth of Japan' focuses on a prehistoric adventure with Nobita and his friends. There are no explicit or implicit LGBTQ+ characters, relationships, or themes present in the story. Therefore, the film has no discernible impact on the portrayal of LGBTQ+ individuals or issues.

The film 'Doraemon: Nobita and the Birth of Japan' does not feature any identifiable transsexual characters or themes. Its plot focuses on children's time-travel adventures and friendship in prehistoric settings, without addressing gender identity beyond conventional depictions.

The film features Shizuka Minamoto as the primary female character. Her role does not involve direct physical combat or martial arts. Victories against antagonists are achieved through the use of futuristic gadgets and teamwork, not through female characters defeating male opponents in close-quarters physical fights.

The film is a remake within the established Doraemon franchise. All primary and supporting characters, including those from the original manga and previous adaptations, maintain their canonically established genders without any changes in this installment.

The film is an animated Japanese production based on an existing manga and anime series. All established characters, including Nobita and his friends, are consistently depicted as East Asian, aligning with their canonical portrayals. There are no instances of a character established as one race being portrayed as a different race.