ThisIsANo
What if Percy, Thalia, Jason, Hazel and Nico were raised on Olympus instead? What if all their father's sacred weapons go missing? Zeus, Poseidon and Hades all feared the day when they would have to send their children down to Camp Half-Blood and it came as soon as Percy was 17, Nico was 15, Hazel was 14, Jason was 14 and Thalia was 16. The Winter Solstice came and as the demigods left, alarms blared an the children of the big three felt immense pain and their heads throbbed.
After so, they managed to get everyone into agreeing camp Half-Blood was the best choice. Though, they didn't leave without their father's giving them pets as protection since walking in with armor and/or weapons would be suspicious.
Percy got a multi-colored dragon (that can not only change size and color, but shoot fire or boiling water at enemies) that he named Crystal.
Jason and Thalia got small eagles that looked like twins and named them Tempest (Jason's) and Pinetree (Thalia's).
Nico and Hazel both got Hellhounds that looked a bit different from each other. Nico named his Cebi [Percy is the Co-Owner] (Short for the dog Hade's uses to guard the palace) and Hazel named her's Arion.
Camp Half-Blood is a bit suspicious when five children come in camp, some "pet's" trailing after them, but allow them in nevertheless. Grover and Chiron were the only ones who knew about them being children of the big three.
Percico! (Everyone who is dating in that book is related anyway.)
DISCLAIMER! RICK RIORDAN OWNS PERCY JACKSON.
THIS WAS INSPIRED BY @SamanthaYong229 and @Star-Walker09 .