Crimson Phoenix~jeon jungkook ff

The phoenix:
She as a serial killer she burns the phoenix sign into her victim's stomachs draining them of all hope to show them that no one there when they need them she then proceeds to slice up her victim's face making them suffer a slow and painful death.
Background:
Right before his big retirement y/n's dad killed his final victim which lead to the victim's brother killing y/n's mom. Once y/n turned 6 years old her father started teaching her to have a heart of ice and a mind of stone making her a stone-cold serial killer and preparing her to take revenge on the guy who killed her mother.

Jungkook:
As a boy he never had any friends, everyone was scared of him including his own family after escaping the mental hospital jungkook wondered boke around the city looking for a way to hide from the doctors and cops that were after him until he met her.
Background:
At the age of 8, he was involved in a violent act on school grounds almost killing a kid that held his sister's hand, his school made him get examined at the mental hospital where he stayed for 4 years after being diagnosed as a 'psychopath'. After being released he was still the same after his parents found out that he was stalking a girl who went to his high school they sent him back to the hospital where he stayed until he broke out at the age of 22.