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WEi (Korean: 위아이; RR: Wi Ai; Japanese: ウィーアイ) is a South Korean boy band formed by Oui Entertainment. The group consists of six members: Jang Dae-hyeon, Kim Dong-han, Yoo Yong-ha, Kim Yo-han, Kang Seok-hwa, and Kim Jun-seo. The group made their debut on October 5, 2020, with their extended play Identity: First Sight. The group's name, WEi, combines the words "We" and "I", meaning that we are one and will make music as one. Jang Dae-hyeon and Kim Dong-han were contestants on the Mnet reality survival show Produce 101 Season 2. Kim Dong-han finished in 29th place, and Jang in 83rd place. After the show, Kim Dong-han debuted in JBJ, while Jang debuted in Rainz. Both groups were active for a period of time and each eventually disbanded in 2018. Kim Dong-han and Jang then made their solo debuts in June 2018 and July 2019, respectively. Kang Seok-hwa was a YG Entertainment trainee who participated in YG Treasure Box, but did not make it into the show's final debut lineup. Yoo Yong-ha and Kim Jun-seo were contestants in Under Nineteen and both became members of the debut lineup, finishing in 6th and 9th place, respectively. They debuted as members of 1the9 on April 13, 2019, and officially disbanded as a group on August 8, 2020. Kim Yo-han and Kang were contestants in Produce X 101. Kim Yo-han represented Oui Entertainment, despite having only three months of training beforehand. Kang competed as an individual trainee and was eliminated after finishing in 35th place. He then signed with Oui a month later, under Kim Yo-han's recommendation. Kim Yo-han finished in 1st place, and debuted as a member and the center of X1 on August 27, 2019. However, X1 disbanded on January 6, 2020, due to the Mnet vote manipulation investigation. The group was announced in May 2020 by Oui, through individual profile videos, under the temporary name OuiBoys. The group's name was later announced to be WEi. They debuted with their first EP Identity: First Sight on October 5, 2020, with the lead single "Twilight". On February 24, 2021, WEi returned with their second EP Identity: Challenge and its lead single "All Or Nothing". On June 9, WEi released their third EP Identity: Action and its lead single "Bye Bye Bye". On October 1, WEi released the promotional single "Starry Night (Prod. Dress)" through Universe Music for the mobile application, Universe. On March 16, 2022, WEi released their fourth EP Love Pt. 1: First Love and its lead single "Too Bad". On July 18, 2022, WEi announced their first world tour WEi World Tour: First Love in September 2022. The group visited 15 cities in 6 countries, including Thailand, Japan, the United States of America, Canada, Mexico, and Chile. On August 11, 2022, WEi made their Japanese debut with the EP Youth and its lead single "Maldives". On September 14, 2022, it was confirmed that WEi would make a new album in October. Their fifth EP Love Pt. 2: Passion and its lead single "Spray" was released on October 19. On December 10 and 11, 2022, WEi held a two-day fan concert Merry RUi Day, along with releasing a special Christmas album Gift For You on December 13. On February 27, 2023, WEi announced their second world tour WEi 2nd World Tour: Passion in April 2023. The group visited 10 cities in 5 countries, including Japan, England, Germany, the United States, and Mexico. Kim Yo-han didn't take part in the tour due to his personal schedule.[citation needed] On May 29, 2023, it was confirmed that WEi would release new music in June. The group released their sixth EP Love Pt. 3: Eternally and its lead single "Overdrive" on June 29, along with holding a concert Eternal Sunshine on the day prior. On January 18, 2024, it was confirmed that WEi would release their second Japanese EP Wave and its lead single "Fake Love" on February 14, along with holding two concerts titled The Wave in Japan. Kim Yo-han did not participate in the album promotions due to schedule conflicts.[citation needed] On July 28, 2024, it was announced that WEi would released a digital single album Love2You on August 30. The comeback features all 6 members, however member Kim Yo-han couldn't participate in the song promotions. On September 2, 2024, it was announced in a statement that member Jang Dae-hyeon was preparing for the mandatory military service. However, on October 2, 2024, the agency announced that the enlistment was postponed after a physical examination. On January 15, 2025, WEi released their seventh EP The Feelings and its lead single "Not Enough", along with holding a showcase concert. Kim Yo-han couldn't participate in this comeback due to schedule conflicts. On May 9, 2025, it was announced in a statement that member Kim Jun-seo would temporarily halt group activities. He was later revealed as a contestant on the show Boys II Planet. He finished the show in 8th place, and is set to debut with the new boy group Alpha Drive One. On August 22, 2025, it was confirmed that WEi would have another comeback in the second half of 2025, without member Kim Jun-seo because of his participation in Boys II Planet, and with member Kim Yo-han resuming musical activities with WEi. On October 1, 2025 it was announced that WEi would make a comeback on October 29, 2025 with their eighth EP Wonderland and its lead single "Home", along with holding a showcase concert. Kim Yo-han participated in all scheduled events to promote the album until December 8. On November 19, 2025, it was announced in a statement that member Jang Dae-hyeon was scheduled to fulfill his mandatory military service in 2026, and that he would participate in Wonderland release events until January 2026. On March 25, 2026, it was announced through a statement that all members of WEi would concentrate on individual activities in the near future, pursuing solo activities while continuing to promote under the name WEi. On March 27, 2026, the digital single "Save" was released to celebrate the 2000th day since debut. Jang Dae-hyeon (장대현) Kim Dong-han (김동한) Yoo Yong-ha (유용하) Kim Yo-han (김요한) Kang Seok-hwa (강석화) Kim Jun-seo (김준서) WEi World Tour [First Love] (2022) WEi 2nd World Tour [Passion] (2023) "Starry Night (Prod. Dress)" was released as a promotional single in collaboration with Universe. An, Hana (October 5, 2020). "장대현 "위아이 그룹명, 우리는 하나라는 뜻...모두 한번에 OK"" (in Korean). Maeil Broadcasting Network. Archived from the original on January 18, 2024. Retrieved January 18, 2024 – via Naver. Kim, Mi-ji (December 15, 2017). "[공식] 로엔 측 "JBJ 재계약? 심도 있게 논의 중"". Xportsnews (in Korean). Archived from the original on December 26, 2020. Retrieved October 16, 2018. Choi, Jeong-min. 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