Forbidden Borders

Shadowed by his eldest brother Sky who is destined to become chief of his entire village, our main character Cres feels compared to his brother. He wasn't part of the village, not born to be chief, just someone in between. Sky was a farmer, warrior, charmer, while Cres was the screw up, and he knew others thought so as well.
One evening Cres found himself getting too close to their borders again on his hunt, he didn't get caught by their enemy this time, but found a strange creature in the night. After it was injured, he saved its life by bringing it back to his village without anyone knowing. He came to realize he was protecting a stranger, a two legger. He didn't think ahead, as usual of what would happen next. He doesn't know how to return them home so he must try and convince his village to accept them.
However, by keeping them at his village, he puts everyone in danger by their enemy. But what will he do now? He bonded to the two legger and feared that returning them would only lead to their death, but he can't keep them there with him for then his people would die.
He regrets being there at the border, if he had done his job and stayed in his own land, if he wasn't such a screw up, things would be different.