Based on available information, Brave Citizen focuses on school violence and vigilante justice, with no explicit reference or depiction of LGBTQ+ characters or themes. Therefore, the film's net impact regarding LGBTQ+ portrayal is N/A.

The film features an original female lead character, So Si-min, who takes on a traditionally masculine vigilante role. There is no indication of any character being established as one gender in prior canon and then portrayed as a different gender in this film.

The film "Brave Citizen" is a South Korean production featuring a predominantly Korean cast and cultural context. There is no evidence of characters being established as one race in prior material and then portrayed as a different race in this film.