As an apprentice ninja, it's time for you to show all your skills in challenging and exciting tricky trials. Will you be quicker, stronger, smarter. Or simply more concentrated than your opponents.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzes reviews to verify trustworthiness.
