Underswap Papyrus comes home from a long day and Underfell Sans relieves him of some pressure; in a strange way. Things get a little out of hand. Warnings: NSFW, language, foot fetish, sensitive bones. (Terrible title, I know)

The skeleton brothers move into Snowdin and have just transferred to Underground Academy. As Sans enters his Advanced Physics class, he makes the worst mistake he could have made. He fell in love with the teacher. Also posted on my tumblr: ask-shoujotale.