People are always so easily fooled by different lighting/shading. The DOA5 lighting has more gradiants and more depth to it, the DOA6 lighting leads to overexposure, flattening everthing. For that reason Honoka's face appears flatter, rounder and wider.
Here I adjusted just the shading (not any shapes) of the DOA6 image to match it more to the DOA5 shading:
View attachment 27979
There, the DOA6 face looks already much slimmer and the nose wider.
The only actual shape differences in these pictures are the eyes and the mouth. That's because Honoka looks up in the DOA6 image which makes her eyes appear bigger (her bottom lashes are also darker having the same effect, old makeup trick), and she also smiles which widens her mouth.
And none of that makes her look more Asian.