1girl black_skirt blush breasts cover cover_page crop_top demon_tail doujin_cover highres holding large_breasts looking_at_viewer lying midriff miniskirt navel on_back on_bed one_side_up open_mouth original pleated_skirt purple_hair red_eyes sailor_collar school_uniform sekiya_asami serafuku shirt short_hair short_sleeves skirt solo tail thighs wet wet_clothes wet_shirt white_shirt