Shizuku has a kind and mature personality. She worries a lot about disappointing her fans, feeling she must maintain a "perfect" image. While she appears very calm and poised, she does have some quirks, such as putting miso soup in her thermos and being extremely bad with technology. Shizuku can also be a bit air-headed, as according to her sister Shiho, she loves going on walks but can't remember any of the street names.