If you want to use models with TDA parts for commercial use (making any kind of money off of it), you need to get permission from both Crypton Future Media Inc.TDA is not responsible for any damages that’s been caused by the models.
So here is a basic rundown of all of these model types’ rules, referencing directly from their original README.
TDA, Sour, YYB, Cham, and Montecore are some of the most popular model types people like to use for models, but some of their rules can be confusing and are often broken (whether intentional or not). What are the rules of TDA/Sour/YYB/Cham/Montecore models? What do these rules mean? How can I avoid breaking them? Rules of Common MMD Models…