I'm not a Kasumi expert by any means but I can look into them once I get the chance to go to training. I found some during DOA5's lifespan but I doubt they work anymore. If I find some I'll let you know!
Thank you very much! Is there a way to test moves to see if they are unholdables tho? I've tested attacks like 66KK but idk if that would be one or not
Hard to explain but I'll give you some general guidelines. The first thing you want to do when finding unholdables is to enable the following options in training: Recovery (any direction), critical hold (fastest) and COM reaction to hold. Type of hold depends on the move you want to test, for example if you want to test a mid K unholdable, set COM reaction to mid K hold).
You turn these optons on because an unholdable can only occur when your opponent techs off the ground. An unholdable situation generally only presents itself after you knock the opponent down or after a hard wall splat. If an opponent stays down on the ground, you cannot perform an unholdable. So unholdables are generally only recommended whenever your opponent is ukemi-happy.
So what does an unholdable exactly mean, you may ask? After teching, your opponent can only block on frame 1. Holding is only possible on frame 2! So in theory, you want to find a move that connects on frame 1 after your opponent stands up, so your opponent only has the ability to block the move. They either block it or eat it; holding is not an option at frame 1. Sidestepping or ducking is also not possible frame 1.
Finding unholdables is mostly a process of trial-and-error. You want to find the sweet spot of hitting them on frame 1 after they tech up. If you use a move that’s too fast, the move ends up whiffing. If the move is too slow, they can hold it (i.e. it connects on frame 2 or post frame 2).
There are no specific moves that will end up becoming unholdables. It completely depends on your kind of setup, the recovery of the setup and the startup frames of your unholdable move. Sometimes you intentionally whiff a random move in between your setup move and your unholdable move to make the setup no-timing. The order of unholdable setups therefore is usually: Initial setup move -> Whiffed move -> Unholdable.