Hoi, this is the new piece of my December challenge. Why does it look nothing like my style? I have no frickin idea. It looks clean so I kept it like this.
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Disclaimer:
UnderSwap and UnderFell AUs were created by their authors, later adopted by the community.

https://www.deviantart.com/katdos147/art/Get-along-scarf-for-the-UF-brothers-Day-09-10-863683617