mizuha

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.