Jee Seok Jin couldn’t stop smiling after hearing his AI theme song! #fyp #runningman #yujaeseok #yoojaeseok #kimjongkook #haha #yangsechan #songjihyo #jiseokjin #jisukjin #jiyeeun #kvariety #kvarietyshow #koreanvarietyshow #koreanvariety #kocowa