4:3age_differencealternate_universeanalanal_penetrationanthroanthro_on_anthroanthro_penetratedanthro_penetratinganthro_penetrating_anthroarmletasgore_(underfell)asriel_dreemurr_(god_form)beardblushbodily_fluidsboss_monster_(undertale)bovidcaprinecryingdialoguedominantdominant_maleduofacial_hairfather_(lore)father_and_child_(lore)father_and_son_(lore)forcedfrom_front_positionhornincest_(lore)japanese_textlong_earslyingmalemale/malemale_penetratedmale_penetratingmale_penetrating_malemale_rapemale_rapedmale_raping_malemammalmating_pressmature_malemissionary_positionmonochromemustacheolder_maleolder_penetratedon_backparent_(lore)parent_and_child_(lore)parent_and_son_(lore)penetrationpenilepenile_penetrationpyon_nyanrapesexson_(lore)son_dom_father_subson_penetrating_fathersubmissivesubmissive_maletearstexttranslation_checkunderfellundertaleundertale_(series)younger_male