Park Jongseong (real name) or Park Jay (familiar name) or usually called Jay (nickname) is a 25 year old young man who is handsome, cold, cruel, rude, manipulative and cunning. Jay is a hitman who has a red stamp (criminal). Jay often went to prison but was always released because his employer paid him. Sometimes Jay can kill his own enemies without being told. He is handsome, tall, strong, has a clear jaw, sharp eyes, and is good at hiding weapons.