- For the soloist formerly known as Taeha, see IONE.
One over Star! Hello, we are I.ONE!
I.ONE (아이원) was a pre-debut three-member girl group under LPA Entertainment. They were originally supposed to debut sometime in 2017, as was announced by the group (A-Young, Hayan, and Narin) on April 27, 2017, during their first showcase held at Gangnam Station.
However, due to some line-up changes, the group re-scheduled their plans to debut in 2018. They were also planning to debut with four members instead of three. Their profile on the website has not been updated ever since.
Around April 2019, all of the group's social media were deleted, making it believed they had disbanded. This was also the last month they were in the idol group brand ranking.
|A-Young (아영)||Leader, Vocalist||2017-2019|
|Eunsol (은솔)||Main Vocalist||2017-2019|
|Z.NA (저나)||Maknae, Vocalist||2018-2019|
|Narin (나린)||Maknae, Vocalist||2017|
- From January 2018 until April 2019, I.ONE managed to be the only pre-debut girl group to get into the girl group's brand reputation ranking 
- Hayan was nicknamed "Snow White"
- They were back-up dancers for TWEETY during their comeback stage for "Bad Boy" at The Show.
- A-Young was also in the pre-debut girl group Roovylette but left sometime in October 2019. 
- ↑ News Town: (뉴타포토) ‘K-POP 커버댄싱스타’ 배봉산 달군 신인 걸그룹 ‘아이원’...‘인기 실감’
- ↑ News Town: (뉴타TV) 북한 미녀 MC 강나라, “섹시걸그룹 아이원 데뷔! 아듀 리쥐! 강남역 음방 특별한 선물 공개! 기대해주세요!” 초대 인사 셀카 영상
- ↑ 3.0 3.1 I.ONE profile: 2018년 4인조 구성 정식데뷔 예정
- ↑ 4.0 4.1 Gwangjoomae Ilsin Moon: “방탄소년단 2019년 4월 아이돌그룹 100대 브랜드평판 1위…블랙핑크·아이즈원·트와이스·엑소 順”
- ↑ News Town: (뉴타포토) ‘데뷔하자!’ 신인 걸그룹 아이원 백설공주 하얀 ‘순백의 여신 자태’...강남역 데뷔 체크 쇼케이스
- ↑ TWEETY - Bad Boy at The Show
- ↑ A-Young on Instagram: I'm back to the member of "roovylette " !
All official group social media has been deleted.