Rule 34 Dev - ? confusion demon_slayer gay hair_down japanese_text kimetsu_no_yaiba kyu_717 looking_at_viewer male male_only monochrome muscular muscular_male nail_polish navel_piercing nervous pants_pull rengoku_kyoujurou smile speech_bubble sweatdrop sweatpants thong_above_pants thong_straps topless topless_male uzui_tengen veiny_muscles|9593099456