Surface? Or Underground? Asriel x Reader...
Frisk has left the Underground, think Asriel would turn back into the miserable flower, Flowey. Unfortunately he doesn't, making him being the only known monster left in the Underground. Another human falls down, (Y/N), and the very first person she meets is Asriel. Still watering the flowers. Only thing is (Y/N) left humanity to come save him, she's learned about him from her teacher, Toriel as she likes to be called.
(Y/N) and Asriel grow closer as Asriel tries to get (Y/N) back to the surface since he does not want her to be stuck down here with him. After all, he doesn't know if he'll turn back into Flowey.
But what happens when Frisk notices (Y/N) missing, since they were quite close. What happens to Asriel and (Y/N)? Read more to find out!
*i do not own Undertale, Toby Fox does