I do not own any characters other then OC's.
Most of my Percy Jackson fanfictions will be after Blood of Olympus. Leo has returned with Calypso. Trials of Apollo doesn't happen. Jason doesn't die.
If I do a fem Percy/ Apollo fanfiction:
Both of them are soulmates.
Apollo knew from the first time he met her in Titans Curse. Percy did not know until after The Last Olympian. When she found out, she was angry that they hid this from her but then they made up and she forgave them. Even before she knew Apollo and her used to hang out and she had a small attraction towards him. In the beginning it was awkward with the Apollo cabin but then later everyone accepts it.
All members of the seven are made immortal. So are Nico and Thalia and Reyna. Depending on the fanfiction Will is also immortal.
In some of them they are Gods and Goddess and in some they are the immortal lieutenant of their parents.
If there are more information I will update it here and inform you in one of the chapters.
