The film 'See You Yesterday' does not feature any identifiable LGBTQ+ characters or themes. Its narrative centers on science fiction elements, racial injustice, and the consequences of altering the past, with no explicit or implicit LGBTQ+ representation.

There is insufficient information available to evaluate the film's portrayal of transsexual characters or themes. The provided movie details and extra web search information do not contain any relevant plot points or character descriptions to make an assessment regarding their presence or depiction.

The film focuses on two teenagers who invent time travel to prevent a tragedy. The narrative is a sci-fi drama exploring the consequences of altering the past, rather than featuring physical combat between characters.

The film "See You Yesterday" is an original story without specified source material or pre-existing characters. Its characters are considered new creations, precluding a gender swap as defined.

See You Yesterday (2019) is an original film without prior source material, historical figures, or legacy characters. Therefore, its characters are new creations, and no race swap can be identified against established canon.