Ywujpekii [jwùʑ pêkíː] (numerous other names; see below) is the traditional animistic and shamanistic religion practiced by Anku and some Xali. there are six main Gods, known as Pekii (singular: Pek), but there are also hundreds of local protector deities and ancestor spirits.

the Anku, as supernatural creatures themselves, have unique ideas on the nature of their existence and concept of an afterlife. the Anku believe they are hungry souls, inhabiting a living vessel, and exist to serve the Pekii as their immense power prevents them from maintaining stable corporeal forms.

the final, supreme Pek, Wa̋-a̋-a̋, is the only one still referred to as djsow. djsow is an ancient word, believed to be one of the only remnants of the "pre-Khingan" Ankuese language. even when speaking casually, Anku must speak in the highest register when speaking about Wa̋-a̋-a̋. Wa̋-a̋-a̋ is described as an extraordinary figure; when Wa̋-a̋-a̋ appears to living beings in their visions, Wa̋-a̋-a̋ is a being made of the brightest light and radiates warmth and comfort. Wa̋-a̋-a̋ has six arms and six eyes. Anku do not use any pronouns for Wa̋-a̋-a̋. the name is held out for six syllables.

Ywujpekii is a new name for an old practice. variants like Ywujdjsow, Djsowyuyuğu, Djsowdjsow, Yuyuğuskryuqa, and X'öx'anquu are used interchangably.