Why won't Dream allow people to kill Nightmare?
Because Nim was a bitch is why.
Nim, decided that if one of there Guardians killed the other, the killed twin would take over the other becoming a dual guardian.
And if someone else killed a guardian, well same thing. That person would be possessed and body twisted into the Guardians form.
The twins would rather not die and take over another body, it sounded creepy.
And then one day, one of them was killed.
YOU ARE READING
Idea Factory
FanficUndertale ideas, some crossovers. may write them, but also up for adoption. please message me if you want to adopt one as I'd like to read it myself <3