1girl, blush, bra, breasts, brown_hair, cleavage, closed_mouth, hiroki_(yyqw7151), idolmaster, idolmaster_shiny_colors, long_sleeves, medium_breasts, open_clothes, open_shirt, panties, red_bra, red_panties, shirt, short_hair, simple_background, solo, sonoda_chiyoko, twintails, underwear, white_background, white_shirt