1girl, arm_support, ball, basketball_(object), blush, breasts, buruma, collarbone, gym_shirt, hair_ornament, hair_scrunchie, idolmaster, idolmaster_(classic), idolmaster_million_live!, knee_up, looking_at_viewer, mat, orange_hair, scrunchie, shirt, short_sleeves, sitting, small_breasts, solo, takatsuki_yayoi, tsurui, v, volleyball, volleyball_(object)