While Leo could say he didn't have much to do with anything related to fiction when he was young, it wasn't like he lived in another world enough to be completely ignorant about them. So when he saw the mountain-sized wyvern making its way towards him and the old man, he immediately recognized it.
At first glance, the first thought that came to Leo when he saw the wyvern was how big it was. While it was rapidly approaching, it was still at a very far distance, but even with this, Leo could still relate its size to a mountain.
It was only obvious that it would be bigger than that, but before Leo could contemplate the size of the wyvern, his focus shifted to something else, which was also related to the wyvern.
