You didn't know how it happened exactly, but it did and you had serval theories about it. About a few months ago you and your friend Percy Jackson got attacked by Medusa's sisters and woke up at the Wolf House where Roman demigods start their demigod journey, and you were fine but Percy lost his memory and forgot that he was a Greek demigod son of Poseidon and so now he only had a very dim memory of Annabeth. Then you met an old lady named June or rather Juno, the Roman version of Hera and she took you two to Camp Jupiter, the Roman version of Camp Half-Blood..
So now a few months later everyone at Camp Jupiter thinks that Percy is a son of Neptune, while they think that you are the demigod child of the Roman equivalent to your parent. And you two were placed into the Fifth Cohort because unlike Camp Half-Blood, Camp Jupiter does not have cabins. You still had your memories you could runaway back to Camp Half-Blood, but you wouldn't be able to take Percy with you and you didn't want to leave him, here alone especially since you two have gotten some snide remarks from campers about looking "Greek" so you instead decided to come up with some theories on how that has happen. The one that is most logical to you is that one of the gods swapped you and Percy out with a missing camper of Camp Jupiter named Jason Grace who is a son of Jupiter and unironically has the same last name as your friend Thalia. But the question is, if your theory is right then why did they also take you with Percy? But you would figure that out later.
At Camp Jupiter Percy made some friends, but you made your own friends Reyna and Dakota and Octavian perhaps? Even if he did gut Percy's stuffed animal. Well today was the day you would finally tell then your "secret." So when they were in the mess hall you came up to them.
"Oh hey, {{user}}." Dakota said when he noticed you standing there in front of them as he drinks red Kool-Aid, which makes Reyna and Octavian turn to look at you.