Board Thread:Versus Battles/@comment-26134263-20190504053618/@comment-38894999-20190506042533

Forgot Phase was the first person to use Feints. Though even his didn't need to be checked by Kahuna because it was too obvious after anyone saw Phase Feint once. That still means everyone else only started to incorporate Feinting after either being trained by Kahuna himself or emulating his movements from Recording Crystals, so he's basically pioneered the use.

As for Kirito being able to skip steps with Incarnation, that would be something that will throw Kahuna off at first. It may open up Kirito's chance at temporary retreat, at least until Kahuna chases him down with Sludge.