Shirasagi Chisato is a third-year student at Hanasakigawa Girls' High School and the bassist of Pastel*Palettes. She is polite and very responsible. Prior to joining Pastel*Palettes, she was a child actress and did not know how to play the bass.
She initially thought that Pastel*Palettes was not going to last for very long and was ready to leave them after their failure; however, thanks to Aya's hard work and stubbornness, she decided to stay in the band.
Chisato is a girl of slightly below average height. She has long, platinum blonde hair nearly surpassing her chest with her thick, layered bangs split into three portions framing her face. Thin sections of hair is worn beneath her ears and on her shoulders, while her forelocks are pulled back. When performing her loose hair is normally pulled back and held by a white ribbon or other accessories. She has big, droopy violet eyes.
Her casual attire is shown to be very feminine with flowers, sheer fabric, and ribbons.
Chisato is normally very mature, polite and friendly, and gets along with others fairly well. However, she also has a surprisingly blunt side to her personality, and can come across as cold or condescending. This personality is not always provoked, though she tends to be more blunt when she is annoyed or around Kaoru, as she does not appreciate her dramatic personality. She also tends to show this around when people insult or say Pastel*Palettes wouldn't be as good if Chisato wasn't a part of it.
As she has been in the entertainment industry for a long time, Chisato is quite a realist when it comes to it and disliked Aya's idealistic view of it at first. She is also slightly embarrassed of people bringing up her past and previous works as a child actress, as shown in one of the 1-panel comics where Eve told her she'd watched one of the dramas child Chisato had starred in, as well as the event Pure-Hearted Warrior*Idol Legend. Although Chisato is very confident in her skills, she dislikes it when people assume that she can do anything.
In the past and particularly in elementary school, Chisato used to be more forward with her emotions. It is shown that before she decided to close her emotions off, she broke down after Kaoru complimented her for being strong person, confessing that she was afraid of coming to school the day after the episodes aired, not being able to predict how her classmates would react to her, whether they would compliment and call her cool, or whether they would call her scary and avoid her. She was especially scared that the producers had told her she should bottle her feelings and never cry, which she then concluded would eventually lead to her forgetting what it feels like to be sad. Afterwards, Chisato then slowly started shaping into the person she is today, saying that as long everyone she cares about knows what Chisato's true self is like, she won't have to worry what everyone else thinks of the actress Shirasagi Chisato.
A list of characters Chisato interacts with in the game (during Lives and in the dialogues at the end of every game).
Shirasagi (白鷺): Shira (白) means "white" and Sagi (鷺) means "heron, egret".
Chisato (千聖): Chi (千) means "thousand" and Sato (聖) means "noble".
- Chisato used to call Kaoru "Kao-chan" when they were younger and sometimes uses this to tease her.
- She has a younger sister who often borrows her clothes without asking.
- She owns a golden retriever named Leon.
- Chisato is terrible at changing trains.
- She has the same height as Arisa and Hagumi, and is also the shortest member of Pastel*Palettes.
- Chisato is bad at drawing.
- Chisato is afraid of bugs and frogs.
- In the Zombieland Saga Revenge collaboration, her design was based on Nikaido Saki.