The One who Changes Fate (A Tokyo Revengers Fanfic)

Kierra Moon is a fifteen year old girl who is a freshman. While at home, she is typically a cheery girl who likes to daydream about different universes and what she would do if she could. She's the type of girl who could learn how to fight just by watching anime.
School on the other hand is a whole other matter. At school, her peers are verbally abusive and all she wishes to do is shut them up so she can continue to daydream of going to another world and being op af.
On the night before July 31, Kierra has a nightmare of there being a school shooting. With there being no survivors and the two armed assailants getting away.
What happens next? Read to find out.