30 day OTP Challenge - Nightblue

Here we go again Art is by diggersgigglesva on Tumblr

~Disease of the Mind~ An Undertale AU Fanfiction

All was peaceful in the Underground... That is, until a horrible disease began spreading rapidly amongst all monsters. It started in Hotland... Then spread to Waterfall... Finally, it has reached Snowdin. Sans never goes outside anymore. He doesn't even go to Grillby's, out of fear the disease will infect him and he w...