Promised Sans (Girl) - ibisPaint

Promised Sans (idk au) by TreloPixel on DeviantArt

nothing useful. — Sans keeps his promise (kinda)

Pixilart - Promised Sans Overworld sprite remastered by RJW3009

Timetwist - The promise. This is a backstory between Sans and

Sans - Promise. by Wildwolflaps on DeviantArt

ErrorTale! Sans Undertale AUs Amino

You Promised (Sans x Depressed!Reader) - Midnight_Underfall - Wattpad

Sans X Frisk: I promised I'd protect you by Renee-Moonveil -- Fur Affinity [dot] net

I promise I'll protect you- Sans and Frisk Virustale by ElectroSkull64 -- Fur Affinity [dot] net

UNDERTALE: promised. (Sans Fight)_哔哩哔哩_bilibili