I didn't mean for you to take offense, just trying to have a bit of fun. I figured out the issue. I was mistaken. Unlike most RPGmaker games of this type the Gallery data is stored in a separate file called "config.rvdata" as far as I can tell. It changes when you beat the game. If you have this file in your game folder you can access the gallery instead regardless of your game status, but the suicide attack requires a NG+ file.
I apologize for my "smart" comment, when I was in the wrong. I will be editing the other post to include the config file as well. Hopefully, that will fix your issue.