No. Percy and Annabeth are only one year older in the new series.
Jason Grace is the son of Zeus/Jupiter. He is the younger brother of Thalia Grace.
Jason and the Heroes of Mount Olympus - 2001 was released on: USA: 2001
Jason Grace's girlfriend in the Heroes of Olympus series is Piper McLean.
Yes.
Yes.
a coin when he flips it its either a sword or a lightning bolt
Yes, Jason and Reyna have a significant connection and relationship in the Heroes of Olympus series. They start off as close friends and eventually develop romantic feelings for each other. However, their relationship faces challenges and complications throughout the series.
Yes, Nico did come out as gay. He admitted to Jason and Cupid that he had a long time crush on Percy Jackson.
The one with the Egyptian gods is called The Kane Chronicles. The one about Jason, Piper, and Leo is called Heroes of Olympus.
Jason Grace wasn't introduced in the Last Olympian. He didn't exist until the next series, the Heroes of Olympus. He is first introduced in the Lost Hero.
Piper McLean in the "Heroes of Olympus" series marries Jason Grace. They have a close relationship throughout the series, facing many challenges together as a couple.
Percy and Annabeth (Obviously) Jason and Piper Frank and Hazel (Almost) Jason and Reyna (Past) Hazel and Sammy (Possible) Hazel and Leo Tyson and Ella Bonus: Coach Hedge and Mellie
Jason Grace is in a romantic relationship with Piper McLean. Throughout the "Heroes of Olympus" series, it is made clear that Jason and Piper have a strong and loving relationship.