I'm confused as to what you want me to do exactly. Can you send me an email or a message on Discord explaining it a little better?
I think I understand the core concept of a creepy clown girl dragging them down to the depths of the sewer to do NSFW things to them, but I have no idea what RWBY is beyond being a Rooster Teeth project, and I don't know who those characters are.
As for the 2D visual novel idea, well, I can do my usual style which is 3D Koikatsu/CharaStudio style, but a full 2D style is doable, but it will take a lot of time to do, which is why I don't do 2D stuff anymore.