The fate of a hero (Nasuverse/Percy Jackson crossover)

Discovery

He reaches the north with surprising speed. Maybe he's a runner? In any case the feeling had gotten stronger. He goes off the road and begins jogging up a hill. Why? Who knows but he feels this is something important to him.

As he's coming up the hill he sees, a tree with something over its branches and... is that a dragon?

While he's processing this a flock of birds comes up from behind. He gets the feeling this is what was pursuing... pigeons? That's not too bad.

Suddenly an object comes flying at him, he avoids it just in time. A small cut is made along his arm and what he now identifies as a feather is stuck in the ground as if it were an arrow that had hit the earth

OK. So, NOT just pigeons.

A bunch of kids with old weapons were coming over the hill now but the birds had already reached striking distance. If he does nothing but run he'll just be hit in the back by several deadly feathers

Karna dodges another few and searches the ground. While he's looking down one feather hits him directly. A wound to the shoulder.

He finds what he was looking for and picks it up. A collection of moderately sized rocks. Not the most impressive arsenal but hey. It's not like there's anything else to do but die and that's clearly not a goal here

He throws the first one up, and it actually hits... only for the bird to fly right back in a few seconds

So he can't hurt them and they very much can hurt him. In fact while observing that a few more feather arrows had hit him. He was lucky enough to avoid getting hit fatally but how much longer...

He throws stone after stone until he's holding nothing at all. Still his presumably rescuers are a little too far away, he hadn't done anything except make a few birds angry. As he gets hit again he knows he has to do something but what? He can't even reach them. Maybe this is where he ends...

No

He hadn't been born into a strange world and almost reached safety just to be killed by a bunch of pigeons. If that's his fate then so be it but he does not think that is the case

Without really thinking about how useless a move it'd be before he does it he thrust out his arms. To his surprise, and the surprise of the others judging by a bunch of exclamations coming from behind, it actually does do something. A stream of fire pours from his hands.

A bunch of birds are thoroughly roasted

However it was not a finishing blow. A bit over a quarter of them remains and he had been drained by that move. As another feather hits he falls back.

Just as he's accepting such a useless death someone lands in front of him, a blonde boy, probably a teen. The next volley of feathers is turned back by some invisible force and then the birds themselves are blown back. Scattered away.

Then another person arrives, a girl with brownish hair. He can't make out much more because he's starting to fall unconscious from blood loss and whatever he just did. The last thing he perceives is the girl quickly taking his pulse then announcing "He's still alive!"