I really cannot tell [Video]
 

I found this clip. Although I doubt it is BE, I could swear that her breasts get bigger by the end after watching it a few times. I guess that the art is just inconsistant, but I'll like another oppinion.

I think thats just wishful thinking

they are definitly bigger though

I think it is more like an unintentional BE.

I agree. Probably just a artist getting to giddy while drawing

Look like it to me

They do look bigger, might be unintentional. We'd have to see the whole movie to tell, and I'm not even sure what hentai that's from. It would just help to know the context of that scene is all I'm saying. So if anyone knows the title of that movie we could at least look it up and get a description of what it's about.

i think that you are right they do get bigger as the clip plays

Actually I think this is an actual BE! The growth happens just as the woman says that her breasts are huge. Like a voice activation.

In the beginning, she could only really fit her fingers on it, in the end, they are filling her whole hands

I was skeptical in the beginning, but now I think this might just be an BE.

Well, womens breasts to actually swell during sexual arrousal but it think that is more then natural ;)

It's because you're missing the hidden footage between the first two shots of her breasts where she kisses her deeply and inserts a pill that makes her breasts grow remarkedly.

Well, not really, but that's more wishful thinking. ^^

It is a beautiful clip. Though I'm beginning to think that every woman in every anime getting their front fondled by a demoness/intrusive doctor has the same voice and utters the exact same cries.