Back Sul Kyung-gu, Yim Si-wan, Jeon Hye-Jin and Kim Hie-won – Bulhandang (The Merciless) Event published on 25.05.2017 Sul Kyung-gu, Yim Si-wan, Jeon Hye-Jin and Kim Hie-won - Bulhandang (The Merciless) © Antony Jones / Getty Images Share Facebook Twitter WhatsApp Link