2girls, armpits, asymmetrical_docking, beat_shooter_(idolmaster), black_hair, blonde_hair, blush, breast_press, breasts, collarbone, heads_together, idolmaster, idolmaster_cinderella_girls, looking_at_viewer, matoba_risa, multiple_girls, saba_suzuki, shirt, simple_background, sleeveless, sleeveless_shirt, small_breasts, straight_hair, twintails, white_background, yellow_eyes, yuuki_haru