/pg/ - Persona General

Yeah, though that one is story-forced so you can't back out from it. Afterwards whether you want to use mementos or not is up to you.
iirc a mision for sojiro's coop is also forced, you talk to futaba and she brings you straight to mementos but it doesn't require you to go through floors, you go straight to the boss.

Volleyball gold medalist

I think you can put that one off as long as you don't want to finish the Hierophant co-op (but that's right before the best part of that co-op, so why wouldn't you?), but IIRC there's no way to avoid the one with Nakanohara at all.

Don't think any of the other Mementos missions were mandatory like that one.

He's a big guy

Man

Poor shiho

The only ending you can get to without doing mementos is the one where you don't give Sae your phone, you're forced to complete Mementos to get to Yaldy

This Shiho?

How's P5? Trying to clear my schedule a bit so I can play it.

I know the girl. I play volleyball and sometimes they bring her up lol

Look for one of the pictures, she's basically female daigo

After people actually had their hands on it the P4 shitposters had to get extra vocal
let that speak for itself