Mettaton smiles gently. He didn't get an immediate rejection, which is already better than he thought this would go.

"I've been researching this sort of thing for awhile now. After I saw your current predicament and how lonely you were here before I came along, I wanted to ensure that you'd never be left like that again."

He slides the papers forward, and on it Napstablook can see complex magical diagrams, along with footnotes and sources to various magical tomes and publications, as well as a... treatise of sorts on his Magical Death Theory.