Based on the information provided, there are no identifiable LGBTQ+ characters or themes in the film '木曽路の決闘 夏祭り三度笠'. Therefore, an evaluation of its portrayal is not applicable.

Based on the information provided, there is no content available to evaluate the portrayal of transsexual characters or themes in the film {木曽路の決闘 夏祭り三度笠} (1951). Therefore, no depiction can be assessed.

The movie does not contain any action or adventure elements.

There is no available information indicating that "木曽路の決闘 夏祭り三度笠" (1951) is an adaptation of source material or features historical figures with established genders that were altered in the film. Without evidence of prior canonical character genders, no gender swap can be identified.

This 1951 Japanese film, likely a jidaigeki, features Japanese actors portraying characters within a Japanese historical or cultural context. There is no evidence of characters being established as one race in prior canon or history and then portrayed as a different race in this adaptation.