This is my first post for quite some time. I taught a seminar recently around Kushanku Kata and thought you might like this take on the opening sequence. The sequence at this seminar worked off the attacker being able to secure a grip on our clothing while strikes are being thrown towards the head. I have larger clip to share which follows the kata a bit further to kamae (hands to the side position) before the Soto / Uchi uke section. If you'd like to see this let me know and I'll share the link here :)
I hope you enjoy.