Undertale & Undertale Au Roleplay Book

Nightmare's Secret He Kept From Them All {Crossmare}

Cross had always worked for Nightmare. He was full on obsessed with Nightmare too but he kept that a secret so no one knew how obsessed Cross was with Nightmare. Whenever Cross and Nightmare was alone, Cross would constantly pester Nightmare, trying to beg Nightmare to give him a chance or at least just have a one night stand with him. Nightmare always ignored Cross though. But Cross never gave up. It never even bothered Cross when Nightmare would reject him. It only made Cross more determined to get together with Nightmare. But what happens if after eventually making Nightmare agree to just a one night stand, what if Cross ended up getting Nightmare pregnant? What if Nightmare hid his pregnancy for the entire pregnancy? But what happens if one night, when Cross decided to randomly check on Nightmare in Nightmare's room, he sees Nightmare was actually in labor with Cross's child that Cross had never known Nightmare was pregnant with?

//I wanna be Nightmare for this//