100% leave hearts beating faster as they continue to hint at a thriller-horror concept with second MV teaser

100% releases teaser images of Changbum and Rokhyun for 'Heart Is Racing'

Jonghwan is up next with his individual teaser cuts for 100%'s 'Heart Is Racing'

100% unveils next individual teaser image of Hyukjin

100% continue to give thrills with another teaser image of Chanyong