I'll follow you into the dark~another Leo Valdez x oc

New Mark of Athena prophecy:

Wisdom's daughter walks alone,
The Mark of Athena burns through Rome,
Twin's snuff out angel's breath,
Who holds the keep to endless death,
Giants' bane stands gold and pale,
Won through pain of a woven jail.
Shadow shall falls into her domain,
One will follow to keep her sane.

Natalya Solovyova is a daughter of Hades. Since she was eight, she had been getting dream of the brown haired Latino. And he have been for her. Soon, they talk to each other and became close friends. They told each other things they wouldn't dare tell anyone else. They were each others reason to live. So when Leo suddenly stops getting dreams about the girl, when it is revealed that she is a daughter of hades, when "shadow" is mention in the prophecy, when Nico, her brother, has disappeared and no one knows where either of them are, Leo becomes concerned for her well being.

This takes place mostly in Mark of Athena.

Everything except Natalya is to the right of Rick Riordan.