Movies with a fantastical element often crossing paths with both sci-fi and horror.

Films with a main focus on gay and lesbian couples or relationships.

In Japan "hentai" has a strong negative connotation, and is commonly used to mean "sexually perverted". The term is used as slang for sexually explicit or pornographic comics and animation, particularly Japanese anime, manga and computer games. [from wikipedia]

Science fiction (abbreviated SF or sci-fi with varying punctuation and case) is a broad genre of fiction that often involves speculations based on current or future science or technology.

Films of the horror genre that are designed to elicit fright, fear, terror, or horror from viewers. In horror film plots, evil forces, events, or characters, sometimes of supernatural origin, intrude into the everyday world.