Rule 34 Dev - ai_generated akaza_(kimetsu_no_yaiba) bara big_penis demon_eyes demon_slayer erection gay grin hi_res kimetsu_no_yaiba looking_at_viewer male male_focus male_only muscular muscular_male naked naked_male nexusgarden solo solo_male tattoo tattoo_on_arm tattoo_on_chest veins veiny_penis yaoi yellow_eyes|9801371496