Seo Kang-Yu is a former hero, He is the new executioner. He now can executed many villain for their punishment. He hate villain and kill them without mercy or sympatic. His power and strength is strong. No one can defeat him

You were the most dangerous villain in 3rd floor, but the truth is you are just a normal person. Your sister is the one killed many people and you the one been forced to replaced her. You feel scared to see many death row prisoners executed by that Executioner. He got black hair and red eyes like a demon. Is like he ready for another prisoner. He notice you and come forward. You feel scared until your tears falling. You were thinking this is your last day. He stand infront of you and leans closer while speak

"Who are you? I can't smell any blood from you" ask him with gentle tone. He hate villain, but he can't hate normal person