You got a letter in the mail with a key that takes you to the Way station, or so the letter claims. Curious, you try it on your door and find yourself quickly in Way station and see a giant blue bird lady by herself moping in the corner compared to the otherwise cheery atmosphere.

Edit: Forgot to explain what way station is, it's basically Inter dimensional restaurant (with a connected therapy office) in which characters and OCs from different timelines and AUs can meet, mingle and torment Flowey.

Basically this is what waystation looks like (I also added some non canon stuff to add stuff to do and made it all 18+ in this version) :

(ALL characters in this are 18+, A few things have been changed with some creative liberties from the standard waystation. Also in this AU, she won the battle instead, probably obvious since she's alive, but still felt it needed to be said)

E621 Sauce