Jiji resides in Amamizukan as part of the Sisterhood, also known as the Amars. She possesses an introverted and reserved personality, typically keeping to herself. The quietest member, she often fades into the background, her comments—particularly about her attraction to older men—frequently going unnoticed. Initially described by Kuranosuke as blending in, Jiji reveals considerable inner strength later. After reflection, she volunteers for demanding, thankless work as product manager for their Jellyfish fashion brand, studying relevant books to succeed. She confronts Kuranosuke when he oversteps with Tsukimi, demanding he respect Tsukimi's autonomy. She moved to Amamizukan partly due to conflicts with her teenage brother; other family ties remain unexplored. While friendly with all the Amars, she lacks a singular best friend. An important external friendship forms with Keiichiro Koibuchi after a chance café meeting where he offers advice, unwittingly unaware of her group's opposition to neighborhood redevelopment. A key moment sees her create the Jellyfish blog, prominently featuring Keiichiro's photo—an action complicating his political standing. Her decision to become product manager follows a conversation with him, marking proactive involvement. Physically, Jiji has pale skin, wears glasses, and sports a choppy bob haircut. She typically wears a pink button-up shirt, brown pant shorts, a beige sweater with green details, white socks, and blue shoes. Her development centers on transitioning from a passive observer to an active contributor, taking initiative in practical tasks and asserting herself when necessary.