1girl ahoge ass ass_grab black_socks blue_shirt blue_skirt blush brown_eyes brown_hair closed_mouth commentary_request escalator floating_hair from_behind grabbing_own_ass hand_on_own_ass highres indoors kneehighs long_hair long_sleeves looking_at_viewer looking_back miniskirt miyuki_(yxbt7) no_panties original pleated_skirt sailor_collar school_uniform serafuku shirt skirt socks solo speech_bubble standing translated white_sailor_collar