▁after ▁the ▁ac quisition , ▁his ▁wife ▁and ▁daughter ▁were ▁taken ▁away ▁from ▁him ▁for ▁experimental ▁purposes . ▁▁ ▁Things ▁you ▁need ▁to ▁let ▁go ▁This ▁arc ▁shares ▁about ▁G hang ▁G won ▁and ▁T ae ▁E un ' s ▁story . ▁G hang ▁G won ▁was ▁taken ▁in ▁by ▁T ae ▁E un ' s ▁family ▁as ▁a ▁child ▁and ▁h ides ▁the ▁fact ▁that ▁he ▁is ▁a ▁' trace '. ▁He ▁doesn ' t ▁sleep ▁at ▁night ▁but ▁instead , ▁goes ▁out ▁hunting ▁' tr ou bles ' ▁to ▁protect ▁T ae ▁E un ▁and ▁her ▁father , ▁which ▁he ▁regards ▁as ▁his ▁family . ▁An ▁unexpected ▁turn ▁of ▁events ▁revealed ▁his ▁identity ▁in ▁school ▁and ▁G hang ▁G won ▁was ▁reported ▁as ▁a ▁trace , ▁being ▁forced ▁to ▁leave ▁them ▁tempor arily . ▁It ▁made ▁him ▁real ise ▁that ▁it ▁was ▁not ▁possible ▁for ▁him ▁to ▁live ▁as ▁a ▁mere ▁human ▁being ▁with ▁his ▁ability . ▁▁ ▁Beg gar ▁This ▁arc ▁revol ves ▁around ▁the ▁middle ▁aged ▁man , ▁Kim ▁Y un ▁Se ong . ▁All ▁he ▁wanted ▁was ▁a ▁peace ful ▁life ▁with ▁his ▁family , ▁away ▁from ▁Tra ces ▁and ▁Tr ou bles . ▁When ▁he ▁realized ▁he ▁acquired ▁his ▁" trace " ▁ab ilities , ▁he ▁tried ▁to ▁hide ▁it ▁but ▁was ▁discovered ▁by ▁the ▁government ▁and ▁his ▁family ▁was ▁taken ▁away . ▁He ▁joins ▁up ▁with ▁a ▁group ▁of ▁other ▁Tra ces ▁to ▁help ▁him ▁get ▁into ▁the ▁facility ▁where ▁he ▁bel ieves ▁his ▁family ▁is