Dixon-san, Thank you for your response!
First of all, I am glad to know that it is not a mistake in the configuration, but a spec move.
Then, as for the mathematical process, it was difficult for me to understand. But the hints you gave me made me realize the possibility that the position of the Owner bone has something to do with the movement of the example.
So I checked the movement when the Owner bone was placed in various positions and rotated, as shown in the attached video.
I will keep this spec in mind when using the Armature Constraint.
Thank you ヾ(*´∀｀*)ﾉ✨
