This person is Day6's Sungjin!
Below are Jungkook's pictures
-I know what you're talking about..
-Whoa.. They really look alike..
-I've always thought that Sungjin has a familiar face whenever I see him.. It turns out that he looks like Jungkook..
-They don't really look alike, but they indeed look like siblings.
-Ah.. Denian..? But their feelings are really similar.
-That... Daniel.. from Descendants of The Sun
-I've always thought that they look alike and got really shocked when I saw this post, I thought they were siblings for real.
-This scares me..
-I got shocked when I saw Day6's MV.. Even their vocal color sounds similar..
-I think he looks like Hongki more than Jungkook, though?
-I thought he was going to reveal his brother's pictures for realㅋㅋㅋㅋㅋ
