ko's kindness, Nobuyuki and his friends attend a joint lesson with Uesugi Productions, a long-established entertainment production company. While getting involved with Nagisa through joint lessons, it is decided that an idol festival - DivaFes - will be held, but..."What are you going to do? What do you want to do as an idol?""I want to join in--no, I want to try!"DivaFes in a joint lesson, and Ai takes on the trial to take the next step as an idol.