Japanese all-girl idol group ukka (previously known as Sakura Ebis) was
officially launched in 2015 as a sister group to Stardust Promotion's Shiritsu
Ebisu Chugaku. Originally a four-piece consisting of Mizuha, Misato, Riju, and
Ayame, the group added fifth member Sora in mid-2015 and made its debut at the
Tokyo Idol Festival. After adding Moa as their sixth member, ukka released a
handful of CD-R singles before issuing their studio debut Sakuraebis in 2018.
This was followed by a second LP titled Octave (2019), and the EP T.O.N.E. in
July 2021. Later that year, the group replac...