Invaded Hearts {Invader Zim X Oc}

(Yes I've been rewriting this so much before even thinking of putting it on here. Am I writing an Invader ZIM x OC fanfiction in 2025? Yeah :'))
(I'm writing this for fun cuz I'm bored and I have many ideas with them)
Irken Mel was an important person to the Tallests, kind of like their little helper. She helped the Tallests with newly assigned Invaders to do their first missions. Ever. Though, while working for the Tallests was the best job any Irken could have, Mel wasn't happy working for them. It was hell for her.
One day, the Tallests give Mel a secret mission: To assassinate the Irken Invader Zim. The Tallests were tired of Zim calling every time, and they trust Mel to kill him.
What will happen once Mel meets Invader Zim?
Invader ZIM characters © Nickelodeon/Viacom and Jhonen Vasquez
Mel and the cover belong to me