So I have talked with Zombiedeers about this but I like to think that the Goretober picture he drew, was a nightmare Keratin had.
More is under the cut because of mention of gore, heavy gore, acid, skin melting and death.
I do not know the details yet but basically Keratin witnesses Cosmo (@zombiedeers OC) falling into a vat/container full of acid in the nuclear power plant, she shouts for help, but no one is coming, so she tries alone to get Cosmo out of the corrosive liquid.
It hurts her so much and she is in a lot of panic when she notices how the acid melts away the hazard suit and the dog she cares so much for, first his fur...then his skin, followed by exposed flesh and bones.
She sees how much Cosmo is in pain, who shouts her name and to help him, tears coming from the desperate nuclear power plants workers eyes, that are mixed with the blood and mucus that is running out of his nose and mouth as he looks at her with anguish and panic in his eyes.
Finally, Kerain is close enough to reach Cosmo's hand, that has already been turned mostly into its skeletal form, with a few remains of flesh and muscles remaining, and she pulls on his hand, as hard as she can, and, it looks like as if she can do it, that she is able to safe Cosmo.
Until there is the sound of something snapping and breaking apart.
When Keratin looks at her hand, she sees how it's still holding onto Cosmo's, that had been ripped and broken away from his body.
As if in slow motion, she sees how Cosmo Sergei falls back into the vat/container, tears running from his face, still calling out for the cat, before being completely submerged slowly by the acid because of the fall.
There is a hissing sound, a few bubbles from the chemical reactions, and Cosmo is gone.
Keratin is too much in shock to hear the creaking of the metal platform she is standing, and before she knows it, the metal platform she is standing on, starts to give in, with Keratin Grand screaming as she falls headfirst into the same vat of acid.
Before she hits the green substance that had already claimed the life of the person she loved, she wakes up.
Keratin is, absolutely distressed and confused at first were she is, before realizing she is at the home of Cosmo and his co-worker, and she immediately searches for him, when she finds Cosmo sleeping on the couch, and her remembering that she visited him and, apparently fell asleep.
With the dream still haunting her, she slowly approaches Cosmo and touches his fur, confirming to her that what she just saw, was a dream and did not happen, and that Cosmo is here...and safe.
Due to the memories still being fresh and burned into her memory, Keratin starts to cry, as she is hugging Cosmo, because, the nightmare felt so real for her, and it made her afraid, that she really had lost Cosmo.
Hearing her sobbing, Cosmo would wake up and seeing the cat he loves in distress, would comfort Keratin who continues hugging him, he would ask her if she is alright, and, when she reveals to him she had a nightmare, would ask if she wants to tell him about it.
And Keratin does, telling him the story she had just witnessed in her dream, with Cosmo comforting her and telling Keratin he is here for her.
Yours sincerely
Bowler