Sayaka is awkward, but also a genuine hard worker who doesn't give up when times are tough. Even though her grades are good, but she has trouble when it comes to her personal life. This is because she can be too serious, even giving simple lunchboxes her all. She also can't bring herself to neglect other people, and can unintentionally give help where it isn't wanted. Upon entering Hasunosora, she initially had no desire for friends, likely because of her lack of humor and sometimes clumsy social skills.