Persona 5 Royal is a huge JRPG that is absolutely packed with content. Like other games in the Persona series (and the larger Shin Megami Tensei franchise), there are a variety of Persona 5 Royal endings. Each of them depends on the choices that the player makes and the relationships they build throughout their playthrough.
Source:https://www.cbr.com/persona-5-royal-ending-explained/