Sometimes, it seems Sans knows more than he lets on. You know you shouldn't let it bother you, considering everybody has secrets. But his tend to get to you the most. You want to know everything you can about him, but you don't exactly know why. You had known everybody in the Underground for two years, but out of all of them, Sans was the one who seemed the most closed-off. Behind that big smile, and all those puns, what was he hiding? Why didn't he trust you enough to say?