1girl bad_id bad_pixiv_id bare_shoulders blanket blue_hair book border braid butterfly_necklace collarbone dress flats hair_ribbon hand_in_own_hair hat hinoshita_akame idolmaster idolmaster_million_live! jewelry medium_hair monochrome nanao_yuriko necklace picnic picnic_basket plant reading ribbon ribbon_braid sitting solo straw_hat sundress tied_dress wristband yellow_eyes