gelbooruhttps://xbooru.com/index.php?page=atom&tags=1boy 2010s 2018 animated skeleton arms behind back blue blush blue collar blush bottom sans bound bound arms bound hands collar collar and leash completely naked completely nude drooling duplicate hands behind back kneel kneeling leash leash and collar leash pull male male only malesub monster nsfwgarbagedump nude restrained restraints sans sans (undertale) skeleton solo submissive submissive male sweat uke sans undead undertale undertale (series) white background2024-05-11T21:06:10Zgelbooru