This part of the storyline takes place near the end before Ren Amamiya aka Joker gets captured by the security in Sae Nijima's Shadow Palace. For the sake of the walkthrough, assuming if you have watched "The Animation" or not, everyone will refer to the silent protagonist as Ren Amamiya. You could have any name you want but this name is the most suitable for this purpose of this game.
Also, pick a difficulty. The wisest choice would be the easiest difficulty which is the most forgivable. Regardless, in any difficulty, there will be enemies with unique difficulties to handle. Last of all, anything exclusive to "Royal" will be noted throughout this walkthrough. Including things that's not included from the original. For now, this walkthrough assumes that you're playing through the Royal version as well.
Anyway, enough of the intro. It's time to get the show on the road! Also, don't get the wrong idea: The name Joker usually refers to the Batman's archenemy but, in this game, think of it as Joker without the Batman in a parallel universe. Just to get that confusion out of the way.
Casino Escape
You'll start by going through the platform to the ceiling part of the area. Follow the tutorial and watch out for enemies. But the enemies you see is as wacky as they usually get throughout the game. Along the way, the mysterious red hair girl will join you in a brief fight before you have to separate. When you reach the ceiling part, press a button near the edge to do several jumps near the colorful window. The only thing left is to jump out of the window.
Interrogate Me What?!
After your character has been beaten down by the guys in suits, Nae comes in to interrogate you. This is your first chance to choose what you get to say. This is usual for any anime games that involves lots of dialogue. Anyway, she wants you to tell her everything starting from the beginning six months ago, after you've been sent on probation on a charge from the past. The first arc after settling down with Sojiro Sakura's Coffee and Curry is the Shujiro Academy's PE teacher Kamashido, the famous but arrogant teacher who's been abusing children despite being a volleyball champion.
Also, the first time you meet Ryuji, Ann and Morgana, a unique black cat.