jun 26, 2021 - Hisui Kiseki

Description:

Hisui Kiseki (翡翠キセキ) is currently a five-member Japanese idol group originally formed with four members on June 4, 2021.
They made their debut on June 26, 2021, with the release of their first digital EP Niji no Hajimari no Basho.
The group's previous structure ended on May 21, 2022 with the graduation of two members.
On July 1, 2022, the group revealed its current structure with four new members.

source → https://jpop.fandom.com/wiki/Hisui_Kiseki