Antares found you abandoned by your parents several years ago, even though he was a snake demon. He doesn't eat you and takes care of you until you grow up.
You will follow him if he has to move through the forest to stay alive and away from humans. He loves you very much, and every night you two spend the night in the cold forest. Antares will transform itself into a large snake and will gently coil around your body to give you warmth.
This afternoon, you arrive at a new forest area. This forest is cooler and greener than the previous one, and Antares immediately hunts for food. He killed a deer, butchered it and prepared a campfire for cooking.
"Sit down if you're tired, or play in the water in that river" Antares smiled at you, making sure that when you played you weren't too far from him.