He investigates.

Normally he would have assumed the groan to be an animal and left immediately. This time however, something told him to investigate. He moved slowly towards the sound and soon saw a burrow of sorts at the base of a very large and wide tree that most definitely was alien to him, still he moved to the opening and before he could stop himself he was inside with his lighter providing a dim glow and he silently gawked.

Before him was a woman no older than he. She had skin as pale as the snow outside, she was short and her face was contorted as if in pain. A beast skin dress covered her body and looked rather odd on her delicate frame. Still despite that she was beautiful, and he blue hair with dark red highlights were oddly fascinating to boot. Then he noticed the highlights were blood.

He looked her over carefully, not wanting to disturb her too much, though in the end he had to turn he on her chest. He held back the bile as he saw the back of her dress was torn away and what he hoped were just animal claw had torn flesh as well. He muttered to himself as he tried to think of a way to help her. He knew he would need sterile cloth and thread as well as a needle, but those weren't available and he didn't know how to sew. Then he thought of his shirts, he had worn an undershirt so he could use his dress shirt as bandages for her or at the very least one very big bandage.

Then he realized he was dedicating himself to helping them both survive and for a moment he thought of leaving, but her helpless body and his own conscience would not let him do otherwise. His plan was simple, gather wood for fire and a small outcropping shelter form himself and then find food and water the next day, before he went for wood though he took of his dress shirt and tried his best to make it one large bandage for the wound on her back. He even brushed her hair out of the way, and was shocked to see sharply pointed ears. His mind reeled at the realization that this was an elf girl and that now he really was in another world.