This page will demonstrate how to use the shader in ASP to render the character, getting the result on the right side of below screenshot.

Disclaimer : I did not made the character model, I only use the model to demo functions of the shader. I also did some modification of the models uv/material in order to show casing some features in this page.
model source :
[3Dモデル]RUNA QUEST POTATO DRONE[アバター] [VRC]
model creator :
concept artist :
<aside> 💡 Please refer to as well when using the shader
</aside>
First, setup all material’s target shader to ASP/Character.
Follow the Setup ASP Character Panel (Important) and Character Shadow Setup Guide (1.3 Update 2025/11/15) to set up the ASP Character Panel and turn off shadow casting of the current character model to the built-in shadow map. Avoid unnecessary self-shadowing during the process.

In the material editor, the Ramp Lighting Map under the Diffuse/Lighting Behaviour category will use a black-to-white gradient map by default. Resulting a regular lambert lighting.