1girl, 2_nostg, ahoge, aqua_hair, arm_behind_head, armpits, black_shirt, breasts, coffee, cup, hair_between_eyes, holding, holding_cup, idolmaster, idolmaster_cinderella_girls, light_blush, light_brown_hair, long_hair, looking_afar, messy_hair, multicolored_hair, ninomiya_asuka, parted_lips, purple_eyes, shirt, sidelocks, small_breasts, solo, tank_top, two-tone_hair, upper_body, white_background