Īt the beginning of the game, he has sacrificed himself for the sake of protecting another person, having lost all power or influence in the world as a consequence.
The protagonist of Persona 5, canonically named Ren Amamiya (which appeared in several spin-off media before becoming his default name in the 2022 re-release of Persona 5 Royal), is a second-year transfer student at Shujin Academy, being placed there to continue his academics due to his ongoing probation resulting from being falsely framed for assault.