Billlie is a 7-member South Korean girl group that debuted on November 10, 2021 under Mystic Story.

They originally debuted as a six-member group: Moon Sua, Suhyeon, Haram, Tsuki, Siyoon, and Haruna. Sheon later joined as the seventh member.

Billlie debuted on November 10, 2021 with the EP The Billage of Perception: Chapter One , which consisted of six songs. The album included the lead single "Ring X Ring" and the track "Flowerld".

Billlie is spelled with three Ls. This is due to the fact that Billlie may be broken down into 'Bi' (Korean word for rain), '11', and 'lie' — Bi11lie. The significance of the number '11' was revealed during their debut showcase. According to their legend, When the 11th bell rings in the middle of a purple rain, something strange happens. The girls lie about what happened in order to keep the strange event a secret. They also revealed during their debut showcase that the name Billlie reflected their "B-sides, the inner-self that everyone has inside them". They hope to empathize with people by expressing their B-sides.

Billlie - 'RING ma Bell' 

Ring my bell

Pillyohal ttae bulleo ring ring, uh-uh
Ring my bell
Igeon durui bimil cheat key, uh-uh (Chapter two)

Neomudo meoreo boyeotdeon got dochakan geoji (Woo)
Binggeulbinggeul idaero na kkeuchil ppeonhaetji (haetji)
Nal kkaewo kkaewo heundeureoseo kkaewojun geoji
Ring, ring dasi ullyeo
Ring, ring ullyeo

Saero mannan sesang sok saekgam areumdapji
I like it, I-I-I like it (I like it)
Deo ttoryeothan sungane insahae
Tto dareun hyeonsillo

Ring my bell
Pillyohal ttae bulleo ring, ring, uh-uh
Ring my bell
Igeon durui bimil cheat key, uh uh (Billlie)

Ullin sorie
Beonjjeok nun tteul ttae
Du beonjjae gihoe
Ring my bell (My bell)
Deo jjarithal geot gatae, yeah
Hwak teojil geonman gatae, yeah (Ooh-ooh)
Animyeon da reset hae
Yeah, geunyang da reset hae, ooh (reset hae)

Geobi nal ttae nal ileul ttae
Himkkeot deo nureuji bonus stage
Jigeum get hae nochimyeon back
Dangyeonhi kkeulliji feelin' so fresh
Jasin itge gaja steppin'
Meoributeo balkkeutkkaji
Nadaun ge mame deulji (hahaha, ige na)

Saero mannan sesang sok gonggi hyanggiropji
I like it, I-I-I like it
Deo jjarithan geotdeureul majuhae
Tto dareun hyeonsillo

Ring my bell
Pillyohal ttae bulleo ring, ring, uh-uh
Ring my bell
Igeon durui bimil cheat key
Uh-uh (Billlie've in me)

Ullin sorie
Beonjjeok nun tteul ttae
Modu da billi
Ring my bell (My bell)
Deo jjarithal geot gatae
Hwak teojil geonman gatae
Animyeon da reset hae
Ring my bell
Modeun geol reset hae (reset hae)

This time is ticking
Neomeoseoya hae (Ring-ring-ring my bell-bell)
Gabyeopge flipping
Nal chajanae (Ring-ring-ring my bell-bell)
Seuseuro taekae
What a wonderful world
(Ring-ring-ring my bell-bell)
Nan nareul mideo

Ring my, ring my bell
Neomu gidaryeosseo wake me up-up
Ring my bell (My bell)
Sangsang mothan nareul manna, uh-uh
What a wonderful world

Ullin sorie
Beonjjeok nun tteul ttae
Modu da billi, yeah
Ring my bell
Deo jjarithal geot gatae
Tto han beon reset hae