"22/7 (read as Nanabun no Nijūni (ナナブンノニジュウニ Twenty Two Per Seven)) is a Japanese idol project between Yasushi Akimoto, Aniplex, and Sony Music Records. The project is described as "The Idols Who Transcend The Dimension." A digital idol audition for the 8 characters was held until December 17, 2016 with final examination was held on December 24, 2016. A CD debut and an anime project are included in the project."
Initially they stated it would be 8 characters/idol but 11 members were chosen. Who those last 3 will voice is unknown
As is common with Sony groups, they have a vevo for international fans. Their first song is Bokuwa Sonzai Shiteinakatta with a 3d animated video of their 2d characters. It was done with motion capture so it truly is a mixture of 2d and 3d.
There is also a short version where the members transform into their characters
I'll remove this if it leaves youtube but bside
All the members have their own showroom channel and they're regularly active on there. Interesting for international fans one of their members, Sally, speaks fluent English and regularly does a mixture of English and Japanese in her showroom often stopping to translate interesting points to the other language.
Whilst the members don't have twitter you can send them messages using their names(in Kanji) as hashtags.