VIDEOS:
LAD Gaiden Save Prompt
The game gives two prompts regarding how this is your last chance to explore Sotenbori before entering the final battle, and that they should stock up on items and gear beforehand.
Example of:
Ominous Save Prompt
You'll save, right?
Example of:
Ominous Save Prompt
"I FORGOT TO SAVE!"
Example of:
Point of No Return