Rumiko Chie teaches all grades at Hinamizawa School's single-classroom schoolhouse, instructing Keiichi Maebara and his classmates. Residing in Okinomiya, she commutes daily to Hinamizawa. Her design—a plain white dress with a red ribbon and green jewel, plus a constant notebook—directly parodies *Tsukihime*'s Ciel with Type-Moon's explicit permission. Shared narrative elements and voice acting roles reinforce this homage across related media. She maintains a kind, gentle demeanor as a teacher, fostering a supportive classroom environment. Yet she exhibits extreme aggression when encountering insults about curry or its history, fueled by an obsession with Indian curry culture. This fixation drives frequent research trips to India and consuming curry for every meal. Her violent outbursts in *Watanagashi-hen* and *Hajisarashi-hen* earned her the moniker "Curry Demon" among villagers and students. Anime adaptations omit this trait except for comedic segments like *Rei*'s first episode and *Kira*'s school curry competition. Within core narratives, she demonstrates concern for student welfare, particularly regarding Satoko Houjou's abusive home situation. When Mion and Keiichi report the abuse, she acts as a reasonable authority figure but cannot intervene effectively due to jurisdictional limits and village power structures. Her character consistently dies during the Great Hinamizawa Disaster in June 1983 alongside other villagers. Spin-offs amplify her parody elements. *Hajisarashi-hen* depicts her wielding six T-squares in combat, mirroring Ciel's "Black Keys." In *Higurashi Daybreak*, alternate costumes directly reference Ciel's nun outfit, with movesets homaging *Melty Blood*. While wearing this costume, her dialogue patterns shift to closely emulate Ciel's speech mannerisms.