>'pure' dark fountain is in school, also has a dark PRINCE that acts and looks much like Asriel
>doesn't care about the weird shit in Kris's room
>Kris carries out the prophecy without compromise
>devout follower of the prophecy-focused religion
>weird-ass variable in the sword route

I'm calling it Toriel is responsible for fucking everything.
She made the school closet fountain for the purpose of creating the dark prince.
She's been grooming Kris all along to be the cage and carry out fate.
She's behind Dess becoming the knight who makes with blackened knife.
She divorced Asgore not because of the Holiday issues, but because he's disloyal to the prophecy and was asking too many questions.

The twisted sword's trance down isn't about (You), it's about breaking Toriel's influence on Kris.