Sans’s Happy Song

This was supposed to be a Tumblr comic... Oh well! Song: Happy by Liam Lynch. My Tumblr: Featured AUs (in order of appearance): — Underswap ( , ) — Underfell (???) — Gaster!Sans () — Ink!Sans () — Outertale ( , ) — Sans Seraphim () — Underfresh ( , ) — Error!Sans ( , )