You and Me Against the World, Literally (yamatwl)

I hate Lucas Holt with all my heart. But he's also so perfect. It's like; is he the devil or an angel?
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What if the apocalypse has come? And you have to survive it with your enemy...?
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Mila Carter and a group of people travel to Manchester from London to find a cure. Along with her enemy, Lucas Holt. How will they survive if they can't even stand each other?