PoserClub - http://poserclub-cab.net/pf/:  A collection of free anime manga character and backgrounds for download for Daz Studios and Poser.

Daz Studios - www.daz3d.com:  Easily create characters and background for your visual novel using this free software.  Daz 3D is a 3D marketplace and free software suite with content that can go anywhere, so 3D artists and designers can create their own high-resolution 3D stills and animations while building professional quality 3D scenes. Founded in 2000, Daz 3D's digital marketplace offers hobbyists and professionals tens of thousands of 3D products with over five million inter-compatible 3D assets for Daz Studio and other 3D applications. Daz 3D has created the most artist-friendly digital marketplace, paying nearly $100 million to its global network of contributing artists. Users of Daz Studio create more than 20 million images and animations annually using Daz 3D products. With over 3 million downloads, Daz continues to drive efforts at the forefront of digital identity and expression.

Visual Novel Maker - https://www.visualnovelmaker.com  

Discover powerful features through a click, drag, or type interface. Manipulate your graphics and text with ease alongside with the software's Live Preview.Use Live2D models to breathe life to your game with our Live2D DLC! Includes a special license to utilize Live2D models without additional contracts or royalty fees! Utilize layered audio and movie effects to present a rich and immersive experience to your audience. Easily localize your game to different languages with our user friendly language tab or export them to CSV format for collaboration purposes! Beautiful free-to-use assets Visual Novel Maker contains beautifully crafted resources named Standard Asset Resources (StARs) to help you start with your game. This includes characters, backgrounds, music and sound effects free to use when you buy the program! Multiplatform Support Export your games to Windows, Mac OSX, Linux Ubuntu, Android, iOS, SteamOS, and for the web!