Funny thing, can't find anything of this artist on the site. Doesn't seem to be on the Prohibited Artist list though, sooo... Merely an overlooked artist, maybe?
Aaanyway, here's this little set from an artist on Pixiv (Migimu Karei) which according to the description there is in essence the idea/concept for a game featuring Kallen Kozuki that would have three endings: The Mental Submission ending, the Physical Submission ending and the Total Submission ending. And no, as far as I can tell the game isn't actually being made; it's just a concept... Unfortunately.
The order I arranged the images in is a bit different from the artists order of the images, but that is because I arranged the order with the state of the two meters in mind. Except for the second image, but the presence of the two arrows there makes it feel like the 'tutorial' of the game when you may be told that if you do so and such this or that will happen during the first training scene of such a game...
Oh, and apologies for the state of the text-windows, but only the first two images came with a 'raw' version, so for me, 'emptying' the windows was simply the easiest option... Anyway, enjoy!