The film "My Boss, My Teacher" does not feature any identifiable LGBTQ+ characters or themes. The narrative focuses on a gangster's experiences as a high school teacher, with no elements related to queer identity or issues.

The film primarily focuses on the male protagonist and his gang's experiences in high school, involving conflicts with other male students or rival gangs. Female characters are present but are not depicted engaging in or winning close-quarters physical combat against male opponents.

This film is a sequel to 'My Boss, My Hero.' Key returning characters maintain their original genders from the previous installment. No established character from the source material or prior film is portrayed with a different gender.

This film is a South Korean production and a sequel to 'My Boss, My Hero.' All characters, both returning and new, are consistently portrayed by East Asian actors, aligning with the established setting and original film. There is no evidence of a character established as one race being portrayed as a different race.