Judging by some closeups of a fantaken photo shared on Twitter recently, I.M's tattoo is a phrase written on his left upper back/shoulder. Fans have deciphered the message as reading either "One who wants to wear the crown, bears the crown" or shortened simply as "One who wears the crown, bears the crown." 

Also synonymous phrase for "With power comes great responsibility", fans found what seems to be I.M's tattoo appropriate and commendable. Check out the photos for yourself below!