LambdaGeneration
Counter-Strike NEO -White Memories-
Counter-Strike NEO -White Memories-
vndb.org

You probably saw that milf Barnette pic. Well, I looked around and found the same image posted on /r/HalfLife, and in the comments there's a "reminder that there is an official Counter-Strike visual novel." Here it is. It's in Japanese of course. And it runs on Flash. Good luck.

csgochicken4
cheatachu72

Is it on Flashpoint?