Well, 'free to use school assets visual novel' might imply that in the creation of this visual novel, any resources associated with school can be utilized without restrictions. This could include things like school uniforms as graphical elements, classroom backgrounds, or educational items like textbooks as part of the story's props. It gives the creators more freedom to build a story set in a school environment.
There might be some lesser - known visual novels in the indie scene that are 'free to use school assets visual novel'. However, it's not easy to point out a mainstream popular one as this is a rather specific concept. It could be that some small - scale projects by students or beginner developers are using school assets freely for their visual novels, but they may not have gained wide - spread popularity yet.
First, always check the license of the assets. If it's under a Creative Commons license, for example, make sure you follow the terms. For instance, some licenses require you to give attribution to the creator. So, when using the asset in your visual novel, include a note about who made it.
First, make sure the assets match the overall style of your visual novel. Then, customize them if needed. For example, if the colors don't fit, change them. Also, test how they look in different screen resolutions.
The gameplay mechanics, if any, could also be different. Some visual novels are more about pure reading and making choices, but 'dies irae assets visual novel' might incorporate other elements like mini - games or more interactive decision - making, setting it apart from other visual novels in the genre.
You can try websites like itch.io. Many indie developers share their free assets there, which might include suitable backgrounds for a visual novel.
It usually means you can incorporate that thing in your story without having to pay for it or get special permission.