[Kamen Rider Die]

Quote:

Originally Posted by Deepsea

Okay looking at the images, you need to nestle the center front teeth of the dragon pauldron's "face" onto the small spike on the upper forearm above the elbow joint.

So, basically, that notch on the arm (flames?) passes through the gap on the pauldron's mouth as you move the arm up and down. It can't really nestle or anything. It's designed (smartly!) to push the pauldron up a bit as you move the arm around.