Not Ong Seongwoo but BTS V becoming victim in a prank that Wanna One Jaehwan planned

On ending stage of MAMA 2018 'Fans' Choice in Japan', all artists came up to stage. Being playful, Jaehwan planned to prank Ong Seongwu by throwing confetti to his head.Unfortunately (unfortunately for Jaehwan, fortunately for Seongwu), Ong Seongwu quickly walked away and avoided the confetti. 

While the confetti did not hit Ong Seongwu, but victim was BTS' V. He was walking behind Ong Seongwu and the confetti accidentally hit his face, like all over face.

What makes fans laugh even harder is the fact that Jaehwan indeed got confetti stuck on his hair, even though he was the one who planned all the prank.