After Saotome Hoshimi emerged from the shadow of her band's breakup, she chose to stop making a living through music and became an ordinary corporate drone.
But to her surprise, she somehow ended up as a staff member for Ave Mujica. Faced with the different troubles of its five girls, Saotome Hoshimi tried to help them as someone who had been through it herself, growing alongside them.
Just as her own life was gradually getting better, she suddenly spotted her former band's keyboardist, and her ex, Platinum Hiiragi, at a concert.
