Nogizaka Star Birth! series is a music variety show in which 4th and 5th generation members have performed and tried their hand at many famous songs. This time, the newly recruited 6th generation members will try to improve their singing skills by covering famous songs that have been sung down through the ages.

Ayano, an elementary school teacher in her thirties, stops by a bar one day and meets another woman named Akari. Sparks fly as the two chat, and before the night is over, Ayano even goes in for a kiss. Akari is intrigued but confused…especially when she discovers that Ayano has a husband! Both Ayano and Akari are about to find out that love doesn't get any easier, even as you grow older.