▁the ▁music ▁video ▁for ▁ 2 Bi C ′ s ▁debut ▁song ▁I ▁Made ▁Another ▁Girl ▁Cry . ▁ ▁Lee ▁followed ▁with ▁a ▁supporting ▁role ▁in ▁the ▁hit ▁rom antic ▁comedy ▁Ro o ft op ▁Prince , ▁where ▁he ▁played ▁one ▁of ▁the ▁ 3 ▁member ▁of ▁Y o och un ' s ▁character ▁ent ou rage . ▁He ▁was ▁then ▁cast ▁as ▁the ▁son ▁of ▁Shin ▁Ha - ky un ' s ▁character ▁in ▁the ▁action ▁film ▁Running ▁Man . ▁ ▁In ▁ 2 0 1 3 , ▁Lee ▁played ▁supporting ▁roles ▁in ▁the ▁historical ▁drama ▁The ▁Bla de ▁and ▁Pet al , ▁and ▁political ▁rom antic ▁comedy ▁Prime ▁Minister ▁& ▁I . ▁ ▁In ▁ 2 0 1 4 , ▁he ▁had ▁his ▁first ▁lead ▁role ▁in ▁the ▁youth ▁film , ▁School ▁of ▁Youth s ▁with ▁B ae ▁Se ul - ki . ▁He ▁also ▁co - star red ▁with ▁B ae ▁No o - ri ▁in ▁a ▁ 4 ▁episode ▁web ▁drama ▁Tele port ▁Lo vers , ▁produced ▁by ▁Korean ▁organization ▁K - Move ! ▁to ▁promote ▁over se as ▁employ ment ▁among ▁Korean ▁youth . ▁ ▁In ▁ 2 0 1 5 , ▁he ▁was ▁cast ▁as ▁a ▁high ▁school ▁student ▁who ▁gets ▁involved ▁in ▁a ▁case ▁with ▁his ▁music ▁teacher ▁in ▁K w ak ▁J ae - y ong ' s ▁Time ▁Ren eg ade . ▁The ▁same ▁year , ▁he ▁played ▁a ▁supporting ▁role ▁as ▁Grand ▁Prince ▁B ong nim ▁in ▁ ▁S pl end id ▁Polit