Sajuna is regarded as a petite young girl for her age, which tends to leave those to mistaking her for a middle school student. But in contrast to this, she is a second-year student attending an all-girls high school. She is shown to have pale pink hair that falls down to her upper back and is sectioned with two pigtails, save for the rest to hang loose, and sharp hazel-colored eyes. For her school uniform, she wears a sailor-style top with a red collar, a dark grey vest, a red pleated skirt, black thigh high socks, and brown loafers. Casually, she likes to wear clothing from "ROJINA" and "Hanatenbo," the in universe counterparts of ROJITA and Yumetenbo, which classify her fashion style as girly kei. When cosplaying, Sajuna opts to do cute characters when dressing up, whether it's a magical girl theme or even a schoolgirl kind of theme. Sajuna is rather headstrong and blunt, despite her child-like appearance. She has no problem with chiding others or speaking harshly when it comes to it and can be quick to lose her temper as well. Perhaps as a given, she dislikes being seen or referred to as a child, as seen when she first met Wakana Gojo. She is shown to take cosplaying seriously and loves dressing up as characters she adores. Despite her popularity online, Sajuna isn't interested in fame and admits that she only cosplays for herself and by herself.