1030640
20172boys2danimated_skeletonbedbedroomblanketbottom_sansbrother/brotherbrothersbulgeclothedclothingcomiccomic_pagecomic_paneldigital_mediadry_humpingduoerectionerection_under_clothesfontcestglowingglowing_genitaliahumanoidhumpingincestindoorsintraspecieslyingmalemale/malemale_focusmale_onlymonochromemonstermonster_boyon_bedpapyrus_(undertale)papysanspartially_coloredsans_(undertale)sequentialsibling_incestsiblingsskeletonsupermuuhtop_papyrusundeadunder_blanketundertaleundertale_(series)unseen_male_faceyaoi
