1girl bad_id bad_pixiv_id bangs bleeding blood blood_on_clothes blood_on_face bone boots chara_(undertale) cutting full_body greyscale holding holding_knife holding_weapon impaled injury knife knife_in_mouth long_sleeves looking_at_viewer missing_limb monochrome oshiruko_(tsume) red_eyes shirt short_hair shorts simple_background sketch solo spot_color standing undertale weapon white_background