Rule 34 Dev - 1boy ai_generated alternate_version_at_source alternate_version_available animal_ears anus balls bell bell_collar brown_hair cat_boy cat_ears catboy collar collarbone cute_male felix_argyle femboy feminine_male flat_chest flat_chested jingle_bell kemonomimi legs_up looking_at_viewer male male_only neonn3k0 nipples nude otoko_no_ko penis petite re:zero_kara_hajimeru_isekai_seikatsu ribbon ribbons ribs short_hair smirk smirking smirking_at_viewer solo testicles trap yellow_eyes|10916068096