The Phantom Thieves of Hearts are a fictional group from the video game series Persona, particularly prominent in Persona 5. They are a band of high school students who possess the ability to enter a supernatural realm known as the Metaverse, where they can confront and change the distorted desires of corrupt adults. Using their unique powers, the Phantom Thieves aim to steal the "hearts" of these individuals, leading to a change in their behavior and a desire to atone for their wrongdoings. The group operates under a code of justice, believing in the importance of reforming society by exposing and challenging moral corruption.