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 hands behind back kneel kneeling leash leash and collar leash pull male male only malesub nsfwgarbagedump nude pixiv id 36285069 restrained restraints sans sans (undertale) skeleton solo submissive submissive male sweat uke sans undertale undertale (series) white background2024-05-11T10:04:00Zgelbooru