adult_(lore) akaza_(demon_slayer) alpha_channel ambiguous_gender amur_carp aquatic brother_spider_(demon_slayer) carp cephalopod child cnidarian coleoid cyprinid cypriniform decapodiform demon demon_slayer doma_(demon_slayer) ear_fins father_spider_(demon_slayer) female fin fish gills group haganezuka_(demon_slayer) hairo_(demon_slayer) hanako_kamado himejima_gyomei humanoid jellyfish kamado_kie_(demon_slayer) kamado_rokuta kamado_tanjirou kamado_tanjuro_(demon_slayer) kanae_(demon_slayer) kimetsu_no_yaiba koi kokushibo_(demon_slayer) kyojuro_rengoku male mammal medusozoan merfolk mitsuri_kanroji mollusk muichiro_tokito murata_(demon_slayer) nakime_(demon_slayer) nezuko_kamado obanai_iguro pinniped puppetmaster13uwu sanemi_shinazugawa sea_lion senjuro_rengoku shigeru_kamado shinjuro_rengoku side_gills side_view silhouette simple_background sister_spider_(demon_slayer) size_difference son_spider_(demon_slayer) split_form squid takeo_kamado tentacles transparent_background tripod_fish typical_carp yoriichi_(demon_slayer) young yuichiro_tokito yushiro_(demon_slayer)