Soul Mixed (Nightmare Sans x reader)

Nightmare X Reader List (Cause I have struggles finding new ones sometimes)) - 23whitecrystal - Wattpad

Sans x Reader - I won't let you go(Nightmare x reader) - Wattpad

My Better Life (Soul Mates in Romeo, #6) by Sarah Ready

☾︎ Undertale au oneshots ~ x listener ☀︎︎ - ☁️ horror x depressed!reader x nightmare? - Wattpad

AnyLink!Sans Bio by HEARTSONGDROWNED on DeviantArt

Misunderstood souls(A Nightmare sans x Reader)

Zu — Imagine Helios!Swapdream!Dream goes & successfully

A Little Bit Of Moonlight Nightmare SansxChild Reader

Not all Nightmares are bad (Nightmare Sans X reader) - Mother - Wattpad