One-shot (Gaster X Alice)

welp I am doing this book for inspiration propose! I actually imagine some story to do but it's never on a well-developed process. So I will do a one-shot version of some story that may never go developed or could depend on my brain... Anyways! it's mostly my OC Alice and Gaster on different version AU that I thought I could developed but end up never doing it cause lack of plot, etc. But also other OC story too!