You reckon you could come up with a wts/wtm/rtd with he following:
Main pc is femharry,
Starts with a summary of the harry potter series.
Femharry grew up the the crew from fast and furious. Same age as Dom. Since she is mistress of death she makes them immortal like herself.
She adopted Percy Jackson. She is in a poly with death/Thanatos, Hades and Persephie.
She took an inheritance test when she went shopping with fitlewick, ravenclaw head of house, she plaid bumble and brought his rep down.
While Percy is at camp femharry is in LA racing. Percy time can be after the films so they can be summed up as well.
Teddy will be an uncle to Percy so teddy when Percy isn't around he can call femharry mum.
The only person who knew bout her life at school, 11-17/18, and older is Thanatos, Persephie, Hades, Hecate, Hera, Hestia, Demeter, NYX and nemesis.
Amprodite could also know the truth. Sally Jackson died at after givin birth, Poseidon thinks sally is alive when she isn't .
This is a idea you do not have to do it it's just on idea.