The keyword didn’t appear out of nowhere. It emerged from fan forums and modding groups who reverse-engineered the original .swf and .exe files. Here is a side-by-side comparison:
I'm assuming you're referring to the game "Kasumi: Rebirth" and its version 3.1. Here's some informative text related to the game: kasumi rebirth v3.1 play %28%28BETTER%29%29
Version 3.1 of Kasumi: Rebirth brings several updates and improvements to the game. Some of the key changes include: The keyword didn’t appear out of nowhere