Looks great. It's 2015 now, how has it progressed?
@VampyricalCurse, C2 was really designed for 2D. However, I found this thread looking at these programs designed for 2D Visual Novels. http://www.visualnovelty.com/
6.99 US (Note: can port to iOS devices)
Both seems to be on the up and up on copyrights to creators.
There's also a visual novel maker on steam, but I here it's limited. However, it can port to andriod and ios pretty fast. http://store.steampowered.com/app/345370