Blushing Flames

KPOP DEMON HUNTERS: (watch the movie on NETFLIX before you read it)
And for the ones that have watched it, welcome to the fandom (bc I know you liked it-EHEM- anyways). And also, for the storyline to make sense, this fanfiction begins on the Soda Pop performance. After that, please forget everything that's happened in the movie. The things after that scene that I want to have happened in the fanfiction will be included.

Now let's begin...

In a world where Demons take over, stealing people's souls to help their King, Gwi-Ma, grow his fire, a girl, kpop group of 3 demon hunters is selected every generation.
With their music, their goal is to seal the Honmoon by making it golden, effectively trapping all demons in the underworld for eternity.
The people don't know about ANY of this, including Bob Park (aka Bobby).
As the manager of HUNTRIX (this generation's selected group of demon hunters), he supports his girls like the dad they never had.

Gwi-Ma decides to keep a close eye on the Saja Boys, making sure Jinu's Plan goes as it must. The Saja Boys, nor HUNTRIX, know about this solo mission of his.
Disguising himself as a human, named Gwi-Maheon, he watches over the boys, but his human form brings something else in him... feelings he should've never felt.
Someone he should've never met becomes someone he hates betraying.
The demon Gwi-Ma used to be didn't have a heart. But as the human he disguised himself as, he's forced to bear one.
The one thing he hadn't planned, though, was this heart of his... becoming someone else's.