U-Kiss Kevin tweeted the picture above and he said "TRICK OR TWEET~ *^^* here's a pic with my sister
@deewoo5 and @Brianjoomuzik I was...UKISS KEVIN! 친누나랑 브라이언형~ 할로윈파티에서 ㅎ http://twitpic.com/78o1sj"
In the picture, Kevin and his sister are wearing just a normal outfit while Brian is a waiter.
Source: Kevin's Twitter via DKP