Jiji resides in Amamizukan as a member of the Amars, or Sisterhood. Known as the quietest member, her reserved and introverted nature often causes her to blend into the background, especially when expressing her attraction to older men. She possesses a pale complexion, wears glasses, and has a choppy bob haircut. Her typical outfit consists of a pink button-up shirt, brown pant shorts, a beige sweater with green details, white socks, and blue shoes. Her decision to move into Amamizukan stemmed from living with her teenage brother. While she maintains friendships within the Amars, none are depicted as especially close. A significant connection forms with Keiichiro Koibuchi after a chance café meeting where he offers advice, unaware of her group affiliation resisting local development. Jiji's character evolves from her initial quietness. When the Jellyfish brand requires a blog, she swiftly creates one featuring Keiuchiro Koibuchi's picture, complicating his political situation. Following a conversation with him, she volunteers to become the brand's product manager, taking initiative by purchasing books to study relevant subjects, marking a shift towards greater responsibility. Flashbacks show her engaging in minor conflicts, like arguing with Mayaya over television schedules. A hidden strength in business acumen emerges, making her one of the first Amars to step forward practically. Her research into jellyfish metamorphosis inspires the brand's thematic direction, drawing parallels to the group's personal transformations. Her journey progresses from a background figure to an active participant in saving Amamizukan and supporting the Jellyfish venture, demonstrating resilience and a capacity for thankless work.