1girl ahoge bangs bikini blue_bikini blush braid brown_eyes brown_hair brown_jacket collarbone commentary_request drawstring eyebrows_visible_through_hair gluteal_fold hair_between_eyes hood hood_down hooded_jacket hoshi_shouko idolmaster idolmaster_cinderella_girls jacket long_hair long_sleeves naga_u navel open_clothes open_jacket parted_lips plaid plaid_background polka_dot polka_dot_bikini side_braid single_braid solo standing swimsuit very_long_hair