There are many versions here on UG! These chords are easy to play and suit the song!

Intro
Bm (x24432@1)BmTtokbaro (x24432@1)hae 
	      A (x02220@1) ENeon (022100@1)jeongmal Bad boy
      Bm (x24432@1)   AE
Sarangbodan hogisimppun 
	   Bm (x24432@1)   A (x02220@1) E (022100@1)	     Bm (x24432@1)  A (x02220@1)EGeu (022100@1)dongan nan neo ttaeme kkamppak sogaseo neomeogangeoya

Bm (x24432@1)  A (x02220@1)       ENeon (022100@1)jaemieobseo maeneo eobseo 
Bm (x24432@1)		       Eneon (022100@1)Devil Devil neon neon

Bm (x24432@1)		 A (x02220@1)ENe (022100@1)haendeupon sumanheun namjan
          Bm (x24432@1)          A (x02220@1)EHan (022100@1)geuljaman bakkun yeoja
         Bm (x24432@1)          A (x02220@1) ENae (022100@1)kokkaji yeokgyeoun Per fume
         Bm (x24432@1)            ENugu (022100@1)geonji seolmyeonghaebwa

Bm (x24432@1)      
Neon na mollae nugul mannaneun
Bm (x24432@1)Kkeumjjikhan geu beoreut mot gochyeonni
Bm (x24432@1)Ttwieo bwado sonbadak aningeol

Bm (x24432@1)   A (x02220@1)     EYou (022100@1)better run run run run run
E (022100@1)Deoneun mot bwa geodeocha jullae 
           Bm (x24432@1)   A (x02220@1)     EYou (022100@1)better run run run run run 
ENal (022100@1)butjabado gwansim kkeodullae Hey Deo 
Bm (x24432@1)       A (x02220@1)           Emeotjin (022100@1)naega doeneun nalgapajugesseo itji ma
           Bm (x24432@1)   A (x02220@1)     BmYou (x24432@1)better run run run run run