Otoha Takanashi is a 14-year-old student at Le Celiana Girls Academy and a Prism Star affiliated with Edel Rose, later forming the unit Bell Rose with Bell Renjoji and Wakana Morizono. She has blue eyes and pale yellow hair typically styled in two pigtails with loose front sections, standing 150 cm tall as one of the shortest characters. Her Prism Show performances embody a feminine style. Her supportive family includes parents Soushi and Otogi Takanashi. She enrolled at Edel Rose due to her Prism Show talent. During her audition, she forgot her shoes; Bell Renjoji lent her the Black Ribbon Pumps, igniting Otoha’s unwavering devotion and forging a friendship with Bell and Wakana, symbolized by matching shoes. Sabotage of her Prism Stone trunk nearly caused her expulsion after low rankings, but Bell and Wakana’s coaching elevated her to Edel Rose’s top three students. Initially docile and timid, Otoha frequently apologizes, especially to Bell, whom she assists with schedules and tea. She possesses a vivid fairy-tale imagination ("Märchen"), spontaneously crafting stories inspired by music’s "scent," which she uniquely perceives. Hesitant to share opinions due to low confidence, she temporarily joined Prism Stone after Bell dismissed her from Edel Rose. There, she organized a tea party event, wrote a fairy-tale Prism Show script, and publicly declared her dedication to Bell during a performance. This period culminated in hatching her Pair Friend, Femini, and returning to Edel Rose with newfound assurance. She gradually speaks more independently, notably dispelling tension with an assertive shout during the Prism Queen Cup. Her relationship with Ito Suzuno proves pivotal, as Ito encourages her to voice feelings, leading to collaborative songwriting where Otoha pens lyrics reflecting her compassion. Her devotion to Bell evolves into mutual support in Bell Rose, exemplified when she confronts Wakana over insincere sentiments regarding Bell’s potential departure. In Prism Shows, Otoha sheds hesitation to perform with fierce dedication. Her Prism Live instrument is the saxophone, and her signature jumps include the Hat Trick Star. She wears various coords, like the Bell Rose Silky Yellow ensemble for performances and seasonal casual wear such as the Lemon Flower Cut-And-Sew. After reconciling with Bell and Wakana, Otoha balances loyalty to Edel Rose with maintained cross-team friendships. Her journey concludes with heightened confidence and emotional openness, while retaining core traits of kindness and fairy-tale-inspired positivity.