Saki's primary concern is her popularity at school, shown when she confronted Sakuta Azusagawa and told him to stop hanging out with her boyfriend Yuuma Kunimi, as Saki assumed Sakuta's status as a loner would lower Yuuma's reputation and hers as well. In later episodes, it's revealed that she has a sister that she's often compared to by her parents, implying Saki developed a low self-esteem because of it, which can explain why she is very protective of Kunimi's image and her own, because her own self-image in her eyes is already fragile.