Yes 100+ hrs is pretty normal for modern Atlus games.

if you like short RPGs try Small Saga and Undertale. I would also say maybe keep an open mind, some of the best RPGs ever made are 80-100 hours and if that seems a lot you can always take a break and come back to it later. Don’t miss out on an incredible experience based on what you think is “too long” for a game.

Ive seen more accounts of 80 hour playthroughs whilst maxing out bonds and archetypes etc. Don't know what that would mean for a more casual playthrough, but it's nice to see it not breach that 150+ hour mark I keep hearing about p5

I mean you can play the game over time. For the price, more is better, and you can just play on easy or skip side quest stuff if you're that strapped for time