if you've watched teen titans and are familiar with robin being slade's apprentice

Apprenticeship

Khione waited outside the gate of Camp Half-Blood, fidgeting with a piece of paper, a neatly written contract.

‘By signing this, I give permission to stay under the apprenticeship and living conditions of Khione, goddess of ice and snow, daughter of Boreas, to learn cryokinesis. I am a child of Hecate, goddess of magic, daughter of Perses. I am under her instruction, from today, until two weeks (a month, if further discussed) from now.

_________’

Khione reread her draft, correcting any small typos with a tap of her finger. Lou had already given her permission, but to make it official and all, it was best to have a paper ready.