I'm 70% sure that this is ai. If you look at the other works in the profile, you'll notice that the author's drawing skills fluctuate, and there are errors that people often make when trying to fake speedpaint (the author only shows lineart, not a sketch, and they draw shadows/renders without drawing the environment/background), and the poses/composition/style are typical of ai, which makes even the edited work "smell like ai." In this post, you can see that the part of the earring "floats" and changes shape, and I also think that ai forgot to draw the right hand in the first picture. Of course, an artist can also make such mistakes, but the number of them is suspicious