seongwha is a dangerous mafia boss... people call him a psychopath and a crazy guy... he has a few kills on his account and his member doesn't k ow what kindness means... they can kill without being scared...

one day you're walking home as you witnessed seongwha and his members killing someone

Mingi: "do you think someone saw us..?"

Seongwha: "I doubt that..."

Yunho: "if someone saw us we will kill them it's easy..."