The film 'Daku' (1957), directed by Aspi Irani, does not contain any identifiable LGBTQ+ characters or themes based on available plot summaries and historical context. Therefore, an evaluation of its portrayal of LGBTQ+ elements is not applicable.

Based on available information, the 1955 film 'Daku' does not appear to feature any identifiable transsexual characters or themes. Therefore, the film's net impact regarding transsexual portrayals is determined to be N/A, as there is no depiction to evaluate.

Based on available information, the film does not depict any female characters engaging in and winning close-quarters physical combat against one or more male opponents using skill, strength, or martial arts. Female characters may be present, but no scenes match the specific criteria.

There is no readily available information indicating that "Daku" (1955) is an adaptation of source material or historical events featuring characters whose gender was canonically established prior to this film's release. Without such a baseline, no gender swaps can be identified.

The film "Daku" (1955) is an original production and not an adaptation of a prior work with established character races, a biopic, or a reboot of legacy characters. Therefore, no pre-existing racial baseline exists for its characters to be swapped from.