A while ago, I made a couple of CG characters. I think would be cool to use in a VN. Can I use these character models? They weren't intended to be  game models for any particular purpose, they're just models of my OC's.

Looking forward to participating!

Thanks!

I think in this case, you can, but I strongly suggest updating them to make them unique to this project.

Edit: Community vote is leaning towards only allowing premade assets that are available to the public in some way (even if behind a paywall). You know the situation better than I do, so please use that as a guideline for how much of your models you can use.