Rule 34 Dev - 1boy aged_down blood bruise child feet_out_of_frame fishnets forehead_protector from_side greyscale highres holding holding_weapon injury kimetsu_no_yaiba kunai male_focus monochrome ninja origami pants paper_crane profile sad sash short_hair short_sleeves simple_background solo uzui_tengen weapon yakiimochan_kmt|22478578083