Ritsuko forces a hard dancing routine on Ryugu Komachi to prepare them for an upcoming secret concert, much to the group's displeasure. While checking out Ryugu Komachi's fan letters, the Producer finds one with a picture of Ritsuko when she was an idol, sent by a fan of her with the nickname "Petit Bellpepper", much to her embarrassment. Upon learning Azusa won't be able to perform due to the mumps, Iori and Ami have a brilliant idea to have Ritsuko take over Azusa's place since she's the only one who knows the song and dance routine. As the Producer and Miki support the idea, Ritsuko reluctantly attends dance training with Iori and Ami, and they take advantage of it to get back at her. On the day of the concert, Ritsuko gets stage fright and feels very nervous until Iori and Ami show a prerecorded message by Azusa to the crowd where the group thanks Ritsuko for being their producer. There is also a surprise appearance by "Petit Bellpepper" and Ritsuko's fanclub who have come to support Ritsuko, thanks to the Producer. With her stage fright gone, Ristuko is able to perform with Iori and Ami. After the concert, Ritsuko realizes how much has changed since she quit being an idol to form Ryugu Komachi, but she still wants to be a producer to lead Ryugu Komachi to the top. However, she does tell the Producer if she ever does a comeback as an idol, she wants him to be her producer. Now with Azusa back, Ritsuko continues the group's regular training for their rise to the top.