1girl, blue_one-piece_swimsuit, brown_eyes, covered_navel, flat_chest, flower, hair_flower, hair_ornament, idolmaster, idolmaster_cinderella_girls, kawaseki, kickboard, light_brown_hair, long_hair, looking_at_viewer, name_tag, old_school_swimsuit, one-piece_swimsuit, open_mouth, school_swimsuit, seiza, sitting, smile, solo, swimsuit, twintails, yorita_yoshino