List of every single wormhole in the castle (based on last bad Guys headcannon):
My hero academia, Homestuck, Demon Slayer, Pokémon, Earthbound/ Mother, Cookierun, Sonic, and Owl House
And yes, the wormholes work both ways. Let's just put it that Game night's are wild.
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Sans Au Headcannons 2
FanfictionContinuation of my Headcannon book, cause my brain comes up with random thoughts daily(I haven't had any good sleep in a year) These are NOT cannon, don't take these as fact. You can use these in your stories though Undertale belongs to Toby Fox, al...
