1girl, adjusting_hair, ahoge, blonde_hair, blue_shirt, blush, breasts, collared_shirt, hachimiya_meguru, hair_ornament, idolmaster, idolmaster_shiny_colors, indoors, kanikou, large_breasts, looking_at_mirror, mirror, mouth_hold, open_collar, reflection, rubber_band, shirt, solo, star_(symbol), star_hair_ornament, tying_hair, upper_body