Unfortunately, in Shin Megami Tensei V Vengeance, you don't have an infinite supply of Poké Balls to store all your demon friends in.
Shin Megami Tensei V: Revenge | Click Atlus | I think it's good
After a few hours of play, your demon lineup in SMT V Vengeance will start to resemble a Slime, Pixie, and Preta parade. Not that you mind these low-level misfits, but when a mandragora-esque Onmoraki shows up, you just can’t resist. Luckily, there’s a way to grab more slots if you’re hesitant to part with a demon.
The catch is that you have to complete a challenge first. In this guide, I'll show you how to unlock more demon slots in SMT V Vengeance.
To unlock more demon slots in Shin Megami Tensei V Vengeance, unlock Divine Garrison Miracles and purchase them in the World of Shadows in exchange for Glory. Here's a step-by-step breakdown: