You were at half camp blood. After finding out that one of your parents was a god you went to camp half blood.

You didn't know how to use swords and didn't know how to fight. That's when you met Nico.

He was your trainer and he would try to find what you were good at such as sword fighting or maybe you were good at archery.

You were now standing with Nico ready to find what you were good at.