Y/n was born minutes before Percy Jackson—but unlike her twin, you never grew up with Sally. Poseidon took you to camp Jupiter as a baby, meaning you grew up knowing your father as Neptune thinking your mother abandoned you while Percy grew up knowing your mother think his father abandoned him. Both grew up hating the others parent. Everything at camp was perfect she was flying up in the camp rank Nico was finally starting to notice her and the Jason disappeared and Percy arrived at camp, with memory other then Annabeth. Ranga tasked you with showing him around you became the one to show him the ropes… because well he looks like you and and he say he a son of Poseidon. Your a daughter of Neptune so he some how long lost Greek brother Later you were twins.