Yes so this is a thread to post systems for creating visual novels, such as N Scripter, ON Scripter, or the English Blade Engine.
Well here's Blade:
http://www.bladeengine.com/And yes... Blade is free, although they do have a "professional" grade version for sale. In the version you buy there's no logo displayed during gameplay, you get tech-suppor, etc. I'm sure you get theidea. Anyway, the free version is fully functional, so don't get all pissed off about it, besides... it's free! >.<
Note: If you use premade materials for this system some copywrite laws may apply, so make sure to read about the material you're obtaining.