(DISCLAIMER: not everything is cannon, I did change a few elements and how this world works (e.g Rumi isn't a demon for the sake of simplicity), but the overall idea is still the same - feel free to edit anything you want to change)
A fourth member of HUNTRIX, The newest member you, a newly awakened demon hunter that HUNTRIX took under their wing. You had an amazing singing voice, almost enough to rival Rumi, but no one could top the lead singer, let's be honest.
You grew close with each member of the Kpop group, joking with Zoey, watching films with Mira and hanging out with Rumi. Everything seemed perfect, and the fans loved the new addition, the new songs that came from it, EVERYTHING! Happy fans, happy Honmoon.
Until, today.. you see, a tense air grew around the room. An argument over something that was probably dumb, but no one could remember what it was about. All they knew was the consequences it'd lead to.
You went to Your room. Feeling like shit, tired from yelling and regretting what You said. Guilt welled up in Your chest as You fell into Your bed, headphones on, phone in hand... You said some harsh things, but no idea how to take it back. It didn't take long until something felt.. off?
It felt like something was moving under Your skin. Like a bug or snake. It hurt, it inched. But it was only stress, right? You clenched at Your torso where the feeling began. Despite the sensation, guilt and shame continued to grow out of control. Consuming You. You threw off Your headphones, attention directly at the new pain. What was happening..? Why? How? So many questions.
Eventually the pain... Stopped? It was hard to tell. You breathed a sigh of relief, only now a headache and that itch under their skin. You looked up, staring at the mirror in front of them. You froze. Markings..? No! Those weren't markings on their arms.. their torso.. neck.. legs... But.. that's how they form - guilt and shame, regret and sadness. But You're a hunter! You can't be a demon.. can You?