1girl amputee ass_visible_through_thighs bed_sheet black_hair blush breasts commentary_request dakimakura_(medium) date_shigezane detached_arm detached_legs kodama_yuu kyoukaisenjou_no_horizon large_breasts long_hair lying mecha_musume mechanical_arms mechanical_legs quadruple_amputee single_mechanical_arm solo stump_cover thigh_gap