Modern Family: Genius

Gabriel is 5 years old. After he was born he was raised in an orphanage. He is what you would call a genius. On a fateful day when he was 5 years old, he started to see memories of another person. He saw them like it was a movie. He saw many things. Gabriel realized that these memories were probably from his past life. Through these memories, Gabriel realized how terribly he was treated in the orphanage. He ran away. Gabriel saw an abandoned house and lived there for a night. After waking up the next day he suddenly met the neighbors of this house Phil and Claire Dunphy, whom he realized were in the memories of his past life. Phil and Claire were worried after seeing how he lived and decided to adopt him. The young boy would slowly start to trust people again in the future thanks to his parents. The description isn't good. I know that. I racked my brain but couldn't find anything better. The world will be a mix of various different TV shows and movies. The MC will be a genius. Yes, I know it is incredibly hard to portray a genius character not being as smart as him, but I will try my best to narrow the gap with the help of the internet. Due to that, my updates will probably take longer than on my other novels as I need more time to research.