Shiori Baba/History

Episode 7
Appearing with their group in Saga Rock, they only make a presentation during the episode while Ai watches them, since it was their previous group.

Episode 12
Appearance at the end of episode 12, when Ai sings her part, again indicating a future relationship.

Episode 15
Appearing for the first time in the second part of the episode, Shiori arrives with her group at Saga at Kyushu International Airport, upon arrival she is received by a large number of fans due to her fame throughout Japan. Her speech in front of her press is inspired by the fact that nothing is eternal in life and that Iron Frill is unique and incomparable, this being an indirect reference to Franchouchou.

She later appears at the end of the episode by following Ai to her place of work. There, she mentions that she has been following Franchochou for a long time (presumably since Arpino) and that she sees that Ai does not want to be in the group because little by little, she has been distancing herself from the other girls. Not letting Ai speak, she says that Franchouchou is a bad group for Ai, and that she should join Iron Frill, expecting Ai's decision after the show, which will trigger future drama. Though, she is unaware that Ai cannot leave the group due to her status as an undead zombie.

Episode 16
Now in the newly inaugurated stadium of Saga Arena, she prepares for her new success, NOPE!!. Proud of herself, is interrupted by Yui, the voice of reason from Iron Frill who tells her that she found out that she tried to recruit a number 3 of Franchouchou. Shiori replies that she will not be able to shine in a place like Saga and that with Iron Frill she will be better. Yui tells her that she knows the real reason is her admiration for the former center of Iron Frill, Ai, and tells her to put the past in the past.

Before the event, she talks to Ai about Franchouchou's performance to which Ai tells her not to underestimate the group since they have not stopped improving since they started. Shiori doubts this and goes confidently to the concert, however, she is surprised by the electrifying performance of Franchouchou and we see that his attitude with number 3 is because it reminds her of his childhood idol, Ai Mizuno. Although she later tries to recruit her again, she is rejected by Franchouchou. After her national tour she, acknowledges Franchouchou's performance calling them a worthy rival.

Episode 24
Due to the Saga Arena concert, Iron Frill respects Franchouchoy and they decide to promote the charity event to help Saga. Shiori Baba/Historia