I can't give you a 2D dimension, but I can maybe get in the future a real nekomimi for you, if that's what you want, but this needs more planning and I have to change myself for it too, but this is all part of my plan.
I can only say that they exist already since over thousand years in the believes of the Egyptians, Japanese and others.
And as they say "faith can move mountains" :^)
There is also always the unironically the possibility to get in your "world of dreams" after your suicide/death, but I wouldn't risk it to do this method.
