Question: What film type has been around since the early years of Korean cinema and includes Whispering Cooridors as an example?
Sentence (from "Whispering Corridors (film series)"): The series is notable for helping generate the explosion of the New Korean Wave cinematic movement, and dealing with taboo topics such as authoritarianism in the harsh South Korean education system, gay relationships and teen suicide, following the liberalization of censorship.
Relevant evidence: No