@Autumn Librarian: yes yes it is
I think it might be because Sayaka and Rebbecca are... kinda similar??
I'll go off what they state on the wiki about Sayaka's personality:
"Seeing as she's an idol, Sayaka has a cheerful, sweet, and supporting personality. Despite her idol career, Sayaka actually enjoys cooking. Very similar to Rebbecca -- Rebbecca also enjoys cooking as well, especially cooking pasta.
Sayaka develops a bond with Makoto Naegi, whom she considers her friend, assisting him on every occasion in Chapter 1. However, she tends to hide her feelings when she is under great pressure by putting on her public persona. She also cares greatly for her band members, and would not hesitate to do something if anything were to happen to one of them, including things that could hurt others. Pretty similar to Rebbecca. When pushed to her limit, Sayaka will do anything even if it's a risk. Not extremely similar to Rebbecca, but... kinda. After she watched Killing Among Loved Ones, she only thinks of how she could escape from the Academy, even planning to betray Makoto.
Sayaka mentions that she often finds herself focused on a particular person, but pushes these thoughts out of her mind to commit herself further to her idol career. This was something SB used to do before she got shipped; she pushed romance away because she wanted to focus on her hero career. (Look how that turned out)
Sayaka has an amazing intuition, as she can easily tell what people are thinking. She often joked about being psychic, only to admit that she was kidding later."
@Grif: dO IT--