A young couple paced quietly through a forest, a forest where a horse lost it's rider, a witch carried a basket, and an elf held a bow.

The two people seemed about the same age, and about the same height as well

One was female, the other not so much, she had bright red eyes, he bright blue, they shared the same short golden hair, and the same pale colour. 

She wore a red cowl that blew gently in the wind, with simple white clothes underneath

He a cape that flowed the same, with just as simple white clothes and they both had a pendant that held the Gemini symbol on it

The two elementals, who we can now clearly say, are related, walked aimlessly, and calmly, until they found a gruesome scene in the snow, there were three sets of tracks leading in one direction. Two old, one new, without sharing so much as a glance, the two began to follow the trail, not seeming to mind the mess, or eerie lack of remains. 

Castor, the boy, seemed to watch for their left, and Pollux, the girl, seemed to watch for their right. and they didn't seem to pay as much mind to the front.