Proof it's been in since the Free Step system's creation in DoA2:
https://clips.twitch.tv/AntsyIncredulousFungusRickroll
For those that may be brushing this off since DOA6 is around the corner, do realize that there is an extremely high chance that FSDC is gonna be in that game as well due to idle frames.
S/N: I don't have it recorded (macro is screwing me) but GBoD cancel with Akira is +34. Eat a free knee lololol