Maybe try Netherworks

Also, it's pretty easy to scale hair to fit other figures by using the X, Y, Z scale dials. That's all "hair fits" really are I think.  Once you've adjusted the scale you need to parent the hair to Aiko (even if it's conforming hair).  If it's a hair found in character, use the parameter dial properties to change the parent. If it's a hair found in "hair library", change the parent by going to "object, change parent".

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi