Then Came the King

Evelyn's sister is dying and magic might be the key to save her, but the deeper her and her friends are swept into this new reality full of monsters and godly feuds she begins to question just how far she is willing to go and what she is willing to sacrifice to obtain the power she needs.

...

With a thread of hope, Evelyn and her friends embark on a quest through worlds to find a way to save her twin sister but the path is riddled with darkness, treacherous enemies, and heart-breaking betrayals. The further she is dragged into the murky waters of this new world the more she begins to question if a world without magic might be safer for everyone, because something ancient and evil has begun to wake. It's darkness has already begun to spread and poison the other worlds. If Evelyn wants the opportunity to save her sister she will have to use the stolen power within her to make herself into a weapon fit for a king.

A weapon strong enough to kill a god.