Memoir of a Murderer does not feature identifiable LGBTQ+ characters or themes within its narrative. The film focuses on its primary plot and character development without incorporating elements related to queer identity or experiences.

Memoir of a Murderer does not feature transsexual characters or themes. The story centers on a retired serial killer with Alzheimer's who suspects his daughter's new boyfriend is also a murderer, leading to a suspenseful narrative driven by memory loss and a father's protective instincts.

The movie does not contain any action or adventure elements.

The film "Memoir of a Murderer" is an adaptation of a novel. The genders of its primary characters, including the protagonist and other key figures, align with their established portrayals in the original source material. There are no instances where a character's gender was altered from the source to the screen.

This South Korean film, an adaptation of a South Korean novel, features characters portrayed by South Korean actors. No instances of a character established as one race being portrayed as a different race are present.