i'm assuming you are referring to the Persona games, which are usually just abbreviated to P and the game number (ie. P3, P4, P5, P4AU, P4D, P5A, etc.). Because when you use Ps, it would seem like you are referring to Playstation.
PS5?
Pfft, I have the PS6. The games on this have mind-blowing graphics. It's just sad how Sony's still not doing cross platform with every game though.