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.
Members NameBirthdateColorNotesSora Akane (茜空) TurquoiseFounding memberRiju Murahoshi (村星 りじゅ) BlueFounding memberMoa Serizawa (芹澤 もあ) YellowJoined on January 17, 2016Rina Yuuki (結城りな) RedJoined on September 25, 2021Ruri Aoi (葵るり) LavenderJoined on September 25, 2021Yuu Miyazawa (宮沢友) OrangeJoined on November 24, 2023Koharu Wakana (若菜こはる) WhiteJoined on November 24, 2023
Former members NameBirthdateNotesMisato Sakurai (桜井 美里) Graduated on December 28, 2020Mizuha (水春) Former LeaderLeft on March 18, 2021Ayame Kawase (川瀬 あやめ) Former LeaderGraduated on December 30, 2023
Timeline
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
Discography
Albums No.TitleRelease date1SakuraebisMarch 21, 20182OctaveAugust 21, 2019
EP's No.TitleRelease date1T.O.N.EJuly 28, 2021
Singles No.TitleRelease dateMV CD-R Singles11st CD-RJuly 30, 201622nd CD-ROctober 30, 201633rd CD-RApril 15, 2017 CD Singles1Watashi RomanceSeptember 2, 2017MV2Summer MagicOctober 14, 20183Autumn MoonDecember 28, 20184Winter SleepMarch 30, 20195Koi, IchibanmeMay 6, 2020
Digital singles No.TitleRelease dateMV1LindbergJuly 11, 2018MV2Shakunetsu to Ice CreamJuly 25, 2018MV3Mawaru Mawaru MawaruSeptember 5, 20184Magik MelodySeptember 30, 20185OnegaiyoOctober 26, 2018MV6Gra-genNovember 28, 20187KirakiraDecember 17, 2018MV8Kaerenai!January 31, 20199214February 27, 2019MV10Sorewa Getsuyoubi no 9ji no YouniMarch 29, 201911Nē, Loafer.April 26, 201912Saisho no SaishoMay 31, 2019
Collaboration singles OrderTitleRelease dateNotes1Mugen KagekiMarch 26, 2017With Iginari Tohoku San. Only for sale in events.
References
External links Official website