Prince of harvest

This is the story of a boy named Jessup Grove. Jessup was born as the grandson of King Grove but Jessup has a secret, he is not from this world, but rather from a dystopian version of earth. His greatest fear is being found out and cast away or even executed for stealing the body of an innocent baby buy. Unlike most stories of the protagonist being reborn to be on top Jessup has to come to terms with the fact that his own grandfather is the immortal King progenitor and he will never have the potential of rising to the top. Will he become a victim to his families wrath or will his grandfather put him on his own path to being a king of a new land.