Rap Monster - Kim Namjoon Fanfiction Kang Min Ah was just a normal 20 year old female who had no real goal in life. She worked at a car repair shop and lived in a small apartment with her cat. She had no idea that just in one day, all her dreams would come true and that she would have a chance encounter with Kim Namjoon, also known as Rap Monster from her favourite kpop idol group BTS. Life sure has tricks up its sleeve, huh?