22/7.

22/7 (ナナブンノニジュウニ / ナナニジ) is best described as a Japanese 13-member girl group from the 22/7 franchise. Another profile detail is that they are described as a “digital seiyuu idol group” and “idols who cross dimensions”. Originally as 11, Their debut took place on September 20, 2017 with the single “Boku wa Sonzai Shiteinakatta”.