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🐾𓂃 2016–2018: +GANG. Sometime in 2016, 𝐇ikaru became a member of Avex Artist Academy's kids trainee duo group, +GANG, which was based in their Fukuoka branch, where she was known as member 'Hikaru'. During this time, she has also had live solo events. 𝐇ikaru remained a member of +GANG for approximately 2 years until their disbandment sometime in early 2018,[citation needed] however 𝐇ikaru remains a trainee under Avex Artists Academy Fukuoka.

🎀☁ 𓍯 2021–2022: Girls Planet 999, Kep1er. On July 7, 2021, 𝐇ikaru was confirmed as an upcoming contestant on Mnet's newest reality show, Girls Planet 999, along with the other participating trainees, through the prologue trailer. Her official profile was released on July 19, 2021. The show began airing on August 6 and finished on October 22, 2021. During the show's finale, she was revealed to have ranked 7th overall, thus making her a member of Kep1er. On January 3, 2022, she made her debut in the group with the release of their debut mini album First Impact っ •‌ ༝ •‌ c