This only happens because of latency online I guarantee you. Kasumi cannot delay 4PK's followup so as soon as it blocked the minute the opponent spots the cancel they just need to hit 5T or 6T. I'm speaking from experience because I've faced a player in offline casuals that likes to do the same thing with 4PK and hoshinpo knees. It's not too difficult to react to the cancel either so yeah if someone feels like it they can throw punish that.
Oh, I've noticed that I confused 4PK with 6PK. Therefore, there are no doubts that it isn't unsafe.
I'm sorry for that guys, everything you said was true and adequate.
http://dict.leo.org/#/search=adequately&searchLoc=0&resultOrder=basic&multiwordShowSingle=on
CB > FS > 4H+K KK7K 6P+K > 9PK > 6P+K > KK (Universal)
CB > 33K > 33P > 2P > PKK7K ( or PKKK both this & PKK7K works on all but heavysets so 4PKK heavyset), a great wall juggle
CB > 236P > KK7K > 6P+K > 9PK > 6P+K > KK (Works on mostly feather to lightweights)
Thanks for posting these combos again. I already try to use the second one as much as possible, it works fine.
I have problems with the excecution of 6P+K and 9PK following out of hoshinpo, it's input is not easy for me. I really want to learn this move, it's effective and looks very cool, but I don't get it right now.