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You have always warned us that this would be dark, so it would be natural that even the canon characters would be darker then they would be in the show.

I think people buy it because Cadance's rant is exactly how a vindictive girlfriend/wife would act in that scenario.

I like the story, but now I'm not sure. If it was a bad dream that will be cool

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A part of me is expecting a huge PSYCHE in the last chapter, it was all a nightmare or a big long "What if" scenario that Shining and Cadence are speculating if they decide to try out the spell, but a bigger part of me is like "Nah this is real, no happy endings."

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Oh well, can't always get what I want.

I guess that's the end of Shining Armor as we knew him. His memories will live in a copy of his and some other stallion ceases to exist when they are made to absorb the vial holding Shining's memories. I would consider this to be something like equivalent of murder?

Hah, I kinda would like to see Cadence getting caught and having to explain how on earth could she rationalize all of this? "Oh I just kept making things intentionally worse and then decide to get ponies raped and their personhoods deleted, but I was really jealous so it's ok"

Well since last chapter is serious this story is ruined for me.