I'm an artist, new to Hololive and Vtubers in general, and I need to know if this okay to draw them naked?

Basically, I want to get into Vtubers more, and right now I'm studying body render and shape - that means, drawing a lot of naked bodies. Usually, when I like something - I draw it. So it concerns me, is this okay to draw vtubers naked? Are they like... People? Or characters? I know that some of them are okay about it or even encouraging people to do so, but I don't know who's exactly and don't want to make mistake and offend someone. So if you're profound with vtubers, can you say or even show proof of who's okay with this and who's not? Maybe some of them are underage or just don't like it. And by telling me who's okay with such content - you can suggest me to draw someone specific.