ukka

Biography

ukka (うっか), formerly Sakura Ebis (桜エビ〜ず) is a Japanese girl idol group, formed by Stardust Promotion in August 2015.
The group was originally formed as a "little sister" group of Shiritsu Ebisu Chugaku.
On December 28, 2025, it was announced that the group will disband after a solo concert scheduled to be held at Kanadevia Hall in Tokyo on May 24, 2026.

History

2015
On January they started recruiting members for a "little sister" group of Shiritsu Ebisu Chugaku
On May, Sakura Ebis was launched with 4 members: Mizuha, Misato, Riju and Ayame
On July, Sora was incorporated into the group as the 5th member
On August 1, they showed for the first time at TIF2015.
2016
On January 17, they held their first one-man live. Moa joins as the 6 member
On July 30, they released their 1st CD-R
On July 31, they performed at Girls Factory Day 2 (Ebichu's Day)
2017
On September 2, they released their 1st CD Single "Watashi Romance" in Yokohama Bay Hall
2018
On March 21, they released their 1st Album "Sakuraebis"
2019
On August 21, they released their 2nd Album "Octave"
On November 16, they announced that they would change their name to "ukka"
2020
On December 28, Misato Sakurai graduated from the group
2021
On March 18, it was announced that Mizuha had left the group
On July 28, they released their 1st EP "T.O.N.E"
On September 25, Rina Yuuki and Ruri Aoi joins as a result of the audition
2022
On May 5, They sign their major debut contract with Teichiku Records label
2023
On November 24, Yuu Miyazawa and Koharu Wakana joined the group
On December 30, Ayame Kawase graduated from the group