That’ll buff out with some makeup and heavy cosmetic surgery.

Let me start by saying this: Holy shit, you've made Asriel look terrifying in this state! TBH, the first thing I thought of when I saw him was the Pet Sematary remake. You've done an amazing job on him.

Also, I can just hear his voice giving out a gargled and strained "Friiisk..." at her upon having the mask removed, as though he still remembers her even after being dead for so long.

It does make me wonder where the story goes from here. I'm assuming Asriel's gonna end up making love to Frisk despite his... physical alterations due to being dead for who knows how long. Although, I asked you once, but I'll ask again since I don't remember if you gave an answer or not:

If a zombie has sex with a human woman, does it count as necrophilia?

Frisk: "How did you end up-"

Asriel: "...Never take Chara's last chocolate."

Holy shit that is cool