- HD 1080
- Runtime: 125m.
- Status: Released
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- Languages: ko
- Country: South Korea
- Director: Jang Joon-hwan
- Stars: Kim Yun-seok, Yeo Jin-goo, Cho Jin-woong, Jang Hyun-sung, Kim Sung-kyun
- keywords: assassin, crime family, family conflict, child kidnapping, teenage killer, father son relationship, teenage protagonist
- Production_studio: Showbox, Pinehouse Film, NOWFILM
- Slogan: Raised to be a killer.
- providers: AsianCrush, Midnight Pulp
- The Hwayi: A Monster Boy is featured in the top rankings of 2013
- #8 in Top Action Movies of 2013
- #8 in Top Crime Movies of 2013
- #9 in Top Thriller Movies of 2013
After being kidnapped as a small child and raised by the five men who abducted him, a teenage boy is now forced to join their life in crime.