Manami functions as a core member of the fictional idol group Marronni☆Yell, dedicated to promoting tourism and local culture in Shimotsuke City, Tochigi Prefecture. She stands out visually through her yellow color motif within the trio. As part of Marronni☆Yell, Manami engages in activities focused on raising awareness of the city's attractions and historical importance. Her role requires collaboration with fellow members Nonoka (red) and Ruri (green) to fulfill a promise connected to the region's sakura trees, blending contemporary idol activities with local heritage. The group’s mission involves visiting diverse locations across Shimotsuke City for cultural promotion. During these efforts, Manami and her group encounter the historical figure Shimotsuke no Komaro, who holds relevance to the city's history and the central sakura-related promise. This meeting bridges the idol group's modern promotional work with the area's historical foundations. Manami's involvement consistently aligns with the group's collective goal of supporting Shimotsuke City's identity and appeal to visitors.