This is a Sci-Fi/Fantasy mash-up story, it's setting being in a parallel universe. I'll also use elements of Korean mythology and co. 'The Cult of Apocalypticism' is, in fact, an organisation of eschatologists (for those who don't know, 

Block B are a group of young aspiring hip hop artists from South Korea, lead by the 17 years old (soon-to-be 18) dreadhead MC, Woo Jiho a.k.a Zico.  But getting to the top ain't that easy, so they'll have to pass a lot of obstacles on their way to success, and Zico's unpleasant memories will make it hard for him to move on with his life.