22/7 (nanabun no nijyuuni)
One day, Miu Takigawa suddenly receives a letter notifying her that she has been chosen as a member of a brand-new project.
Half in disbelief, she heads over to the location stated on the letter. There, she finds seven other girls summoned there in the same fashion. The girls behold a giant, top-secret facility. They stand in bewilderment as they are told:
"You are going to debut for a major record label as an idol group."
A new kind of idol, never-before-seen, is about to be born here…
[Source: official English website]