I 'Fell' for You

(Kustard) (Fanfiction and Romance)
Backstory: Fell was having his usual time at his sentry post. Papyrus would obviously be pissed if he was sleeping or he wasn't there. After some minutes, a random portal summoned itself and a silhouette similar to Red fell into the snow. Red got concerned and went to the person. He greeted him nicely for once. The random person told him his name was Sans. Mostly known as Classic. Red got surprised and took it personally. Classic told him to chill and let him live with Red. Red refuses because Pap would get soo pissed. They try to figure out a way to let Classic live in Underfell with Red.

(What? You thought I was gonna tell you the whole backstory? Nah. Read the story.)

(COVER NOT MINE//EDITED//CREDITS TO OWNER)