The result of an idea that plagued me awake from a sound sleep at two am the night after I saw ep 301: Deception. Sorry.
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They come slinking out of the shadows. He, as she remembers, false humanity layered over the product of science. She, as he remembers, pale, pale skin dressed like Halloween every day of the year. They find a hotel that asks no questions of those with the money to spend. Rundown but clean, not that they care.
They come together, desperate, pale flesh bruising under iron-hard hands, pale fingers digging into chocolate skin on one side, not even marking the metal under the illusion of flesh on the other. And if she calls a name that isn't truly he, and hasn't been for a long time, or perhaps never existed at all… that is fine.
They lay still, afterwards, dark and light in the shadowed room, pretending they can ignore everything that is for this brief time, listening to the quiet that permeates the room. Finally, they part ways, back to their lives and responsibilities and respective sides, a different reality from the one they share now.
"Don't be surprised when you find Brother Blood waiting for you here, when next we meet." He is amused. "Just like I'll take you into jail, next time. I'll be waiting for your call." She blushes, and he is charmed. It doesn't matter that the next time they meet, it might indeed be them at each other's throats. For now, this is real enough.