Vince: Like I said, most hair props/characters for Aiko do have a setting for "realistic", I don't know about that particular hair 'cos I don't have it.
That said, looking at your image, if it doesn't have the setting, that could be made to fit easily enough using the xyz scale dials and the xyz position dials.
I have done this many times with hair fits for V4 for example where there is no V4 version of a hair, I have dialled it to fit.
It's not always perfect but any mismatch can be hidden depending on your pose, for example if you can't see the back of the head, who cares if it's not right there as long as the front and / or sides looks right!!
What you can't see doesn't matter!!

Injustice will be avenged.
Cofiwch Dryweryn.