Either a Man or a Woman (1989)

No information was provided regarding LGBTQ+ characters or themes in '{To muzhchina, to zhenshchina}', preventing an assessment of its portrayal.

The movie does not contain any action or adventure elements.

The film's plot involves a character undergoing a gender transformation within the story. However, the characters are original to this film and were not established in any prior canon or source material. Thus, no character's gender was changed from a pre-existing baseline.

This 1989 Soviet film is an original production, not an adaptation of existing material with pre-established character races or a biopic of a known historical figure. Therefore, no characters exist whose race could have been canonically or historically established and subsequently altered.