bad guy

Kim Taehyung and his twin sister, Kim Chungha are known as the gorgeous, popular siblings that rule their school - well, their grade.
Jeon Jeongguk, doesn't buy into their goody-two-shoes act and he soon learns that the twins are actually the next mob bosses to take up their father's gang.
Jeongguk learns that the underground world - and the Kim twins - is far more different than he would have imagined.