Based on the prompt "Person B has been having nightmares so person B borrows person A's shirts, which has been helping them sleep." with Frisk being Person B and Sans being Person A. Sans/Frisk. 2nd POV. Can be seen as brotherly or romantic. Post-Pacifist ending. Spoilers to various endings. (Cover Art courtesy of dogpu on tumblr!)
Undertale - Rated: K+ - English - Hurt/Comfort/Friendship - Chapters: 1 - Words: 8,695 - Reviews: 34 - Favs: 505 - Follows: 111 - Published: 10/18/2015 - Frisk - Complete