The Seven Oaths

Emma Blackwell spent her whole life being nobody, waiting tables, paying her own bills, needing no one. Then her estranged billionaire father is murdered, and his entire fortune goes to a stranger in a lime green suit. All Emma inherits is a brass antique and a chipped toy truck.
The truck talks. It's actually a wolf.
Beneath every city on Earth lies a hidden world Emma never knew existed, governed by Seven Oaths older than written history, and her father wasn't just rich. He was its last line of defense. Now that duty falls to her, whether she wants it or not, and not everyone agrees she has the right to it at all.
With Hudson, the ancient wolf bonded to her family for generations, and Fred, an impossibly old being hiding behind terrible jokes and a worse fashion sense, Emma races to uncover why her father really died, why an entire realm is quietly starving to death, and what a fallen, centuries-old Keeper named Lucien wants with her family's blood.
She never asked to matter. She's about to find out what happens when the world decides she does anyway.
A story of inheritance, found family, and the terrifying weight of a legacy you never chose.