The Billage of Perception: Chapter One is the debut extended play (EP) by South Korean girl group Billlie. It was released by Mystic Story on November 10, 2021, and distributed by Kakao Entertainment. The album consists of six tracks with "Ring X Ring" serving as its lead single and also the previously released song "Flowerld" but with modified version.

Billlie is a South Korean girl group formed by Mystic Story. Billlie debuted on November 10, 2021, with the extended play (EP) The Billage of Perception: Chapter One. The group originally consisted of six members: Moon Sua, Suhyeon, Haram, Tsuki, Siyoon and Haruna. A seventh member, Sheon, later joined the group.