Shizuku is described as a girl whose face and voice are rather deadpanned. Her way of speaking lacks the normal voice inflection, so even if she personally doesn't intend to, she still comes across as being solemn. Shizuku exhibits kuudere characteristics. When Honoka and her began to hang out with Tatsuya's group, she only commented from the periphery, but gradually lowered her guard and started expressing herself openly. She is straightforward, occasionally does merciless snarking, and can say 'mushy' comments out loud without any sense of shame. Her usual expressionless face has had Tatsuya sometimes confused as to whether she is serious or not, but after getting used to it, he has realized that she simply doesn't lie. In the worst case, she would simply remain silent. She cares deeply about her friends. When Honoka tells her that she likes Tatsuya, Shizuku tries her best to allow Honoka a chance, but at the same time, worries a lot and cares about Miyuki's feelings - thus, she confronts Miyuki in order to ensure her feelings.