The most basic Purity of Sleep forms. This Stage focuses on the attacking aspects of the technique. Most people when they are asleep are unable to make any movement other than breathing. Stage 1 is meant as an introduction to the techniques Purity of Sleep is able to offer. However, evasive and redirection skills are a more complicated and higher leveled than just simply attacking in sleep. This is considered, by Kyoto, to be the easiest form to use and master. It only revolves around attacking while in a relaxed-sleep state in which weaker people are unable to dodge.