The name of the medicine/drug is real and its definitions are also real but the statistics are not true. The main thing to note is that the drug policy of South Korea is one of the strictest in the world, nothing can be smuggled to South Korea also there is no dangerous mafia operating in South Korea. So this story is a work of fiction and has nothing to do with South Korea's reputation.
ALL THE CHARACTERS ARE FICTIONAL, AND THE CELEBRITIES HAVE NOTHING TO DO WITH THIS FICTIONAL BOOK