Rule 34 Dev - abs alternate_version_available blonde_hair blush brown_eyes demon_slayer erection fundoshi fundoshi_aside hi_res indoors kimetsu_no_yaiba long_sleeves looking_at_viewer male male_only negishiokun on_bed open_shirt pajamas pants_down pecs penis precum precum_drip shy sitting smile solo spread_legs teenager thick_eyebrows twink two_tone_hair uncensored underwear_aside young zenitsu_agatsuma|7062159656