Myths E.N.D X Reader

Ok so the reason I made this is because there was hardly any of these online so I wanted to add another. I have basically read each and everyone. If I hadn't it's because the description of the story doesn't sound interesting. So here is the description.

You and your sister go on a job trying to defeat the demons but as you are on the mission you hear a voice in your head.
When you are battling the demons you get seriously injured and blackout.
When you are knocked unconscious there you meet the voice.
As the time goes on you start hearing the voice more often and more clearly. It calms you down.
When fairy tail is attacked by a load of demons you end up seeing the voice once again and this time he's dedicated on taking you with him.
On making you his wife.
His queen.
Who is the voice?
Will you instantly go with him?
Or will you hesitate?
Because after all he was a MYTH you were told about.