He even wrote something that was reminiscent of KiiiKiii's song (T/N: lyrics to 404)
They posted that video yesterday night but got 2.8M views overnight on Instagram.....

original post: here

1. Oh they are good. Jungkook is totally a promotional fairyㅋ He has been liking and reposting things here and there

2. Jungkookie's impact👍👍

3. Kya is seriously good, she's good at using her expressions too

4. Wow, amazing

5. They are so pretty and talented

6. What's impressive about Jungkook is that he's been reposting idols' challenges and I end up finding idols that I've never seen before

7. Jungkoo's influence

8. Seriously, Jungkook is so good as a promotional fairy. KiiiKiii, fighting

9. I also went to look at Jungkook's reposts and KiiiKiii did so well

10. I saw it from his reposts. They're good