How does Riku get his permanent keyblade? Because I can't remember.

Soul Eater became Way to The Dawn sometime before TWTNW, offscreen.

Soul Eater became Way to The Dawn sometime before TWTNW, offscreen.

 

This. We don't know exactly when or how.

Isn't there another thread about this somewhere? I remember arguing with Azureflame a little bit over what Ansem the Wise said.

I hope this is explained properly in BBSV2.

soul eater was never actually a keyblade

maybe its one of those things are gonna be revealed in kh bbsv2

Lets hope so.