Fallen Down

The sequel to A Knocking at the Door! Like the actual one this time! If you haven't read A Knocking at the Door yet, I would really advise you to read it now... You would be really confused otherwise!

After the skeleton brothers and Toriel have lived in the closest thing to harmony they can manage, their world is about to be changed after a human falls into the underground.

(Wow... I summed it up in one sentence... Well, one sentence without spoilers that is! It's gonna get pretty crazy!)
(Cover is temporary (hopefully) before I can make one, but this art does not belong to me)