Whilst trying to search for an explanation for Zantetsu's glitch where he repeatedly bounces on the opponent i came across WiLMaster002's channel. Although i've still not found an explanation of how to do the glitch i did find a couple of interesting videos on this channel.
The first is for Last Blade 2 and demonstrates how you can use an unblockable air attack on the opponent waking up.
From the video description:
This video showcases various setups for the Unblockable Air Hit Glitch.
The glitch is that for a brief period as a character is waking up from a knockdown they are unable to block aerial attacks.
It should also be noted that these setups can be escaped by:
2. A reversal attack (a la Lee (2)8B
3. By rolling away from the setup.
Credit for the video goes to the creator: HungKENFeng.
Original video and other great lb2 videos can be found at: http://u.youku.com/user_show/id_UMTI1OTM5NzY=.html
Also another video that was pretty flashy is this guard cancel exhibition for Garou:MOTW
It's well worth having a look in WiLMaster002's channel if you're interested in Last Blade or MOTW as there are quite a lot of combo, demonstration, and match videos for those two games.