Hi Noraneko Games!
TotoyeVN Engine is a game engine library written in JavaScript. It's a source code with several methods which can help you create a good 2D visual novel. The project contains two zip files: TotoyeVN-engine-2.1.0.zip and demo.zip. The first one contains the library file(TotoyeVN_2.1.js), the library Licence(LICENSE), a Readme file(README.md) with credits for the images, and a folder with images; The second one contains an HTML file(index.html) with the credits as HTML comments in the HEAD tag and two folders: images and sounds. Each contains whether images or sounds and a License.txt file. Those two License.txt files contain the credits for the sounds and the images.
In conclusion, the credits are given to Noraneko Games for the images and to Tim Beek for the soundtracks. People who'll use the library TotoyeVN will be able to see the credits more than once. I'll later add the credits in the Demo conversation so that you can see it clearly.
If you want anything else, we'll be happy to assist you!