A pen sword. That is the stupidest thing I've ever heard.

"You have a better idea?" I asked my sword. Suddenly, the wall next to me exploded, and a kid—probably 17 or 18— burst through it, followed by a mastiff roughly the size of a tank. "What?" I yelped in surprise.

The teenager brought his sword down on the dog's head, and it exploded into dust. Then he noticed me, and asked, "Why do you have a sword? It doesn't look like Celestial Bronze or Imperial gold. Are you mortal? I'm pretty sure it's illegal to carry around a normal sword."

"You're one to speak! I'm just standing here, you're blowing tank-sized dogs into powder!"

His eyes widened, and he said, "You saw that?" He asked.

"Um... I was standing right here."

"Wait... is your name Magnus? Magnus Chase?"

"Um, yes?"

"Oh, that makes sense. My name's Percy. I'm Annabeth's boyfriend. She's told me about you!"

He touched something to the tip of his sword, and it turned into something small and thin... A pen. My eyes widened. I held up my sword. "See? A pen sword ISN'T a stupid idea!"