What Secrets Are You Two Keeping? (A Moosecraft And Aphmau Fanfic)

So, this story has ItsMoosecraft's fnaf world series, Aphmau, and Undertale, Underfell, Underswap, Outertale, other Undertale AU's, and Underverse's plot involved. That's all I'm saying, read to find out more. It might be different from what you normally find for this topic.

By the way, I own absolutely nothing, except for the story line. Also, I will also probably make the characters all way to OOC. Sorry if you don't like that, you don't have to read my story. Though, it would help my self-esteem if you did.