The fan who posted the tweet was clearly excited to see the two celebrities follow each other.
Meanwhile, Baekhyun was seen replying to a fan's tweet of a video showing IU singing "UN Village." In the reply, Baehyun excited calls out IU's character name when filming 'Scarlet Heart: Ryeo' and says "Soo-ya!! Soo sang my song!" Shortly after discovering the video, Baekhyun followed IU on Instagram.
Shortly after being followed by Baekhyun, IU decided to return the favor and follow him back. Fans were excited to hear IU's version and some responded they are anticipating a collab with the two artists.
Here is IU's version of "UN Village" that was tweeted: