Arisa Ichigaya is a third-year student at Hanasakigawa Girls' High School, holding the position of student council vice president and playing keyboard for the band Poppin'Party. Her family operates the pawnshop Ryuuseidou, where she lives in a traditional house featuring a basement that serves as the band's practice space; this basement is also where Kasumi Toyama discovered the Random Star guitar. Arisa learned piano as a child alongside Tae Hanazono and Wakana Rei but quit due to fading motivation and school demands. She returned to playing to join Poppin'Party after befriending Kasumi. Arisa began as a reclusive individual, favoring solitude and indoor pursuits like bonsai care and internet browsing. Despite claiming laziness, she excels academically. Her personality blends introversion with a sharp wit and quick temper, leading to frequent arguments, especially with Kasumi, often stemming from difficulty expressing her true feelings openly. She blushes and stammers when complimented, revealing underlying vulnerability and loneliness she typically denies. Early interactions featured exaggerated politeness to maintain a refined image, particularly with strangers. Her involvement with Poppin'Party and the student council sparks character development. Arisa evolves from a loner rejecting help to someone valuing friendship and gradually showing kindness. Her relationship with Kasumi is central to this change, evident in instances of jealousy when Kasumi spends time with others, panic when hugged after performances, and dreams involving Kasumi. A solo song, ‘Su-Suki Nanka Janai!’, implicitly references these complex feelings. She also displays flustered reactions to physical affection from characters like Eve Wakamiya or Lisa Imai, indicating discomfort with emotional openness. In Garupa☆PICO, Arisa maintains her tsundere traits while actively engaging in band antics. She possesses a "sweet and spicy personality" and is frequently swayed by Kasumi and Tae's influence while struggling to articulate her own desires directly. Her hobbies include naming bonsai plants such as Tamagawa and Popipa, conversing with them daily, and overpacking for trips, always including her favorite fluffy towel. She avoids celebrating Christmas with her grandmother and has a documented dislike for leeks while favoring anmitsu, brown rice, and hard-boiled eggs. Arisa's background includes familial loss; her deceased father left behind the Random Star guitar and a notebook titled "BanG_Dream!", containing plans that inspired her band's formation. This history contrasts with her original storyline, where she owned cats and displayed a different personality. Her role expanded in collaborative events like the "Let’s Enjoy an Exuberance Fun Band!" ensemble, interacting with members such as Hina Hikawa and Kokoro Tsurumaki. Her appearance features long, slightly curled blonde hair styled in twin pigtails secured by ribbon ties and cross-shaped clips. She favors mature, feminine attire incorporating lace or floral details, like off-shoulder blouses and high-waisted skirts. Seasonal variations include sweaters with lace accents and tights in winter, and striped sleeveless shirts paired with yellow skirts in summer.