I'm going to remove "Vaginal", since it looks ambiguous from what I'm seeing here. I also checked the source to see if there was any confirmation and I saw there's a second Tweet by the artist that says "Schrodinger's anal; is it or is it not? I suppose we will never know.", which I think further confirms the visual ambiguity.
If you pause the video on some of the rear view frames, you can see lines above where the penetration happens that look distinctly like an anus. Despite the artist's tweet, I feel like that's enough evidence this is 'vaginal' unless someone else wants to argue that those aren't what they look like.
If you pause the video on some of the rear view frames, you can see lines above where the penetration happens that look distinctly like an anus. Despite the artist's tweet, I feel like that's enough evidence this is 'vaginal' unless someone else wants to argue that those aren't what they look like.
I was thinking those lines were too far up the butt crack and in an awkward place to be the anus, and the dick is positioned rather far back and up. So the lines are confusing in my opinion. I was thinking from an anatomy perspective that it likely couldn't be vaginal, but since the point penetration isn't clear I was thinking it's at least ambiguous. I might be entirely off the mark here though, and apologies if I am.
Edit: I'm reminded on the discussion of post #4191152 - Where people note that it looks more like vaginal because of the lines on the ass, but it's still tagged as anal. The artist tagged it as Anal on their Pixiv. Unfortunately they haven't uploaded to Pixiv in awhile so I don't know if we'll see this posted there, but I'm wondering if this is a similar case?