Heirs of a forgotten world

...humankind received a grim reminder

They were blocked there. The spike almost impaled Kaylee, just another step and her flee would have ended permanently. The raging hell continued. Children screaming, people dying, killed by the brown armored men. Gunshots, explosions and crystals everywhere.
<<Kaylee! We gotta go away!>> Yelled William, but his cousin was frozen in fear.
The sky turned cyan, and a giant crystalline face showed up and then, it spoke: <<Inferior creatures.>> The voice wasn't something of this world. It penetrated in the skulls of the frightened people, speaking directly to their minds. <<You thought that we had disappeared. That the power of your king would have sealed us in the lands of Tir na nog. That we have been defeated. That we would have never come back. And with that conviction you have wallowed in your illusory victory and in your ephemera peace. You have forgotten us, confined our existence to mere legends, denying us being real and believing us to be result of the imagination.>> It started laughing, a crazy, cruel and evil laugh that instilled fear and concern in everyone had heared it. <<You have never been so wrong! Now we, the Sidhe, will take what we deserve. Your world!>>  With that laugh filling the air, William looked around, searching a way to escape or at least a safe hiding place. The crystals were growing trying to make impossible to flee, but without killing the children, growing just ahead of where they were. Another quick look around, and he noticed the crystal man. It was creating the crystals just by looking at the road, but only one at time. Where he was looking, here a new crystal appearing. And that is how Will and Kaylee would have escaped. Will waited the crystal man to stop a far away family and ran towards the forest, he ran pulling Kaylee, who made neither a noise nor a single word because of the shock of the near death experience, with him.

Krasiel saw them fleeing, but they were too far to strike with precision to stop them. He decided then to follow them while his master was enjoying the view of the hell the autumnbreeds unleashed. The raw magic emitted by the fleeing duo was unusually high, hard to not sense in the middle of that forest. He followed them until they stopped, watching them from the shadow of an oak.
The boy was emitting raw magic at every move while he was trying to make the woman come back to reason. It was...kinda familiar, like he had met them a long time ago.
But a voice interrupted his reasoning.
<<Leave them go. It's their destiny to make the greater plan come true. Go back to your mission.>>
Krasiel turned towards the city, walked away without making a noise but he felt something magical was making him doing that. A powerful spell, capable of manipulating a Sidhe like him. And with that thought in mind he went back to his master.

Finally back from her shock, Kaylee hugged that genial cousin that put them out of a deadly peril.
<<How did you do it? You elaborated a plan in that chaos! You're amazing!>>
<<I just...stayed calm and watched. Then I came to the most logic conclusion.>> He looked down. <<Using... someone else's life...>>
<<You did what you had to do to survive. You saved both of us.>> She said smiling.
<<I guess I did... Ouch!>> Kaylee had pulled an ear. <<Why did you do it?! You hurt me!>>
<<Stop sniveling. We are alive and this is what matter. If we stay here those Si-things will find us. We gotta move.>>
She pulled him up and they started walking in the forest, getting farther and farther from the devastated city.