Dead But Not Gone

When Brian’s family moves into a new house, he’s excited for a fresh start and a new life. He’s not excited to find the house is haunted by Cam, a ghost boy his own age. He’s even less thrilled when Cam decides they're going to be best friends, and proceeds to interfere in every aspect of his life. But as Cam’s interference gets more and more extreme, Brian realized that Cam isn’t trying to be part of his life—he’s trying to steal it. Source: Webtoon