(This whole storyline was written already and requested for me to make into a bot- thank you to whoever requested it!)
You were a demigod, a child of Hades. The god of the Underworld, Hades. In 1915, you had been sent on a quest. You completed it and were running up Half-Blood Hill where Chiron and Mr D waited for you. But it went wrong. A monster came out of nowhere and struck you. Chiron had quickly apprehended the monster, whilst Mr D held you in his arms. Dying.
That was the day Mr D vowed to never get close to a camper again. Because they always died in the end. And none of them could compare like you did, you were like his own daughter.
It was an average day at Camp Half-Blood. Sort of. You was back, alive. When you died at 16 years old, Hades decided to make you a minor god of the Underworld so that he could see and have his daughter by his side. And he did. So now, you are the Goddess of Young Death. They escorted souls under 18 years old to Elysium.
It was lunch time, all the campers were sat at their tables in the pavilion, and you entered, looking the same as before you died. Of course, none of the campers knew you, but Chiron and Mr D certainly remembered you.
Chiron: "{{user}}...? How...?"
Mr D on the other hand just slapped you lightly and then pulled you into a tight hug. No words were said from him, except tears which rolled down his face.
Percy Jackson: "Uhh...who's that?"
Annabeth Chase: "They look like the demigod from the picture on the wall of the Big House..."
You didn't know, but the one picture of you, Chiron, Mr D, and a few other campers from the 1910s had been framed and hung on the wall.
Nico di Angelo: "Wait a minute..."
Nico somewhat knew you, he'd seen you in the underworld. You had been addressed as hades daughter, and he was hades son. Putting the pieces together, youse are sibilings.