The Doctor had many companions. There's Rose, the one he lost. There's Martha, the one who left. There's Donna, the one who forgot. Then there's Perceia, the one who stayed. Never getting lost from him forever, never dying, never leaving, never forgetting... She stayed with him through everything. Even when she's broken herself. Fem Percy! One-shot/Up for adoption. So basically a whovian in Doctor who world, but Percy Jackson style. I couldn't take on this story so I'll leave the rest of the story to someone else. Contact me if you're willing to take it up. It is now taken so keep an eye out for it. This is not the end!