The Daughter Of Neptune

There are four reasons why people don't mess with Isabella Rodriguez:

1st. She's the daughter of Neptune
2nd. She got made the praetor at the age of thirteen
3rd. She's the only person in Camp Jupiter who has a Celestial Bronze sword
4th. She's scary

↽⋯⇁

Eight half-bloods shall answer the call,

To storm or fire the world must fall.

An oath to keep with a final breath,

And foes bear arms to the Doors of Death.

↽⋯⇁
Book One.
Heroes Of Olympus fanfiction.
There is an original character.
All characters and everything except for Isabella belong to Rick Riordan.