Hate, Friendship, Love - five hargreeves

Grievance is how she suffers now. Alone, unfair, and incomplete. He left Y/n to battle her own demons and struggle with the lengths between life and death.
Then, to rupture her life even further, his return sent shockwaves across her world.
She'd vowed to hate him forevermore but seeing him once more may alight a different kind of flame.
Bringing the news of an impending apocalypse, she finds herself torn whether to help her deserter or leave the past in the past and embrace the future.

Would they be able to reform or rekindle their friendship after so many years apart?
What or who might get in their way?

ENEMIES TO LOVERS

I DO NOT TAKE CREDIT FOR THE UMBRELLA ACADEMY, ONLY Y/N