Part 28: Ninja Gaiden Sigma: Chapter 14
It's almost over. This is the last time we have to play as Rachel, but the game makes sure we go through a future area that she honestly has no justification for visiting, as well as an unwinnable boss fight that the game later insists is winnable in Mission Mode.
Earrings of Celerity
Allows the wearer to charge Ultimate Techniques more quickly.
You already know what this does. I've used it on Ryu already. I barely used it on Rachel if at all. I just have this in the update for completion's sake.
Earrings of the Moon
Increase the wearer's defensive power.
Seriously, what else do I need to say?