Brainy Narwal

Hear me out...

If you don’t remember this theory here’s a refresher:

At the end of their fire music video there is a sentence, “boy meets what” 

W-Wonder-Euphoria

H-Her-Serendipity

A-Answer-Epiphany

T-Tear-Singularity

All that's left is two letters A and T.For W and H it was Jimin who sang Serendipity and Jungkook who sang Euphoria all that's left in the vocal line is Teahyung and Jin. With Euphoria that came out, it’s making this theory true so far. 

During the MMA in 2017, we also saw this  

We know that its based off of the Chinese symbols“起承转合” which mean 

begin/Start “起” (qi)

 Development of the Story“承”(cheng)

 Twist/Plot Twist?“转” (zhuan) 

Close/ End “合” (he)