Yes, natural as in, what she looked like when they took the picture.
She might have a gallon of make up on, but well, this is what she looks like with a gallon of make up on. This is what she looks like with a strong tan.
Adjusting the colors is fine. But they didn't make it that bright for a reason. It covers up her skin color, distorts the whites, puts a high contrast on her hair, and removes details from her face.
That's okay if you like it...but I just think there's reasons why they didn't do it, and that those reasons are fairly valid. It might look BETTER but...a lot of things would look better
I think Ayu doesn't look her best in some, mainly one, of these photos because of the tan, make up, and angles. I don't think better photoshop would have helped that much without taking away from, the things I said above.