Nirvana in Fire is a historical drama centered on political strategy and loyalty. The series does not feature any explicitly identifiable LGBTQ+ characters or themes. While some viewers interpret strong male friendships as having queer subtext, these are not overtly depicted as LGBTQ+ within the narrative.

Nirvana in Fire, a historical drama, does not feature any transsexual characters or themes within its narrative. The story centers on political machinations and justice in ancient China, therefore, an evaluation of its portrayal of transsexual identity is not applicable.

The movie does not contain any action or adventure elements.

Based on available information, the adaptation of "Nirvana in Fire" from its source novel does not feature any instances where a canonically established character's gender was changed for the screen portrayal.

Nirvana in Fire is a Chinese historical drama based on a Chinese novel. The characters are established as East Asian in the source material and are consistently portrayed by East Asian actors in the series. There is no evidence of any character being portrayed by an actor of a different race.