The film 'Case Closed: Countdown to Heaven' does not feature any identifiable LGBTQ+ characters or themes. Consequently, there is no portrayal to evaluate regarding LGBTQ+ representation, leading to an N/A rating for its net impact.

The film 'Case Closed: Countdown to Heaven' does not include any identifiable transsexual characters or themes. Its plot centers on a crime thriller involving a bombing and a murder investigation, with no elements pertaining to transgender identity or experiences.

The film features skilled female characters, notably Ran Mouri, who possesses martial arts abilities. However, there are no scenes depicting a female character engaging in and winning direct close-quarters physical combat against one or more male opponents within the movie's narrative.

This film is a direct installment in the Detective Conan franchise. All established characters maintain their canonical genders as portrayed in the original manga and prior adaptations. No characters previously established as one gender are depicted as a different gender in this movie.

This animated film is part of the long-running Japanese 'Detective Conan' franchise. All characters maintain their established racial depictions from the original manga and anime, which are consistently Japanese (East Asian). There are no instances of characters being portrayed as a different race than their canonical or widely established depiction.