Of course this is not Isshinryu, but I have always felt in this counter throw by Mufine Sensei of Judo there is also a lesson for us.
His attacker uses a motion that looks very like the knee strike from Wansu in this attack, This might be a caution how the movement could be used against you if you do not strike accurately or as intended,
The knee lift, possible knee strike is shown in the 2nd photo.
Every motion can be countered.
Something to think about.