Call me out! Antumbra edition.
Prompts!
In the land of gods and monsters: Shin will be very happy in his home world, which is a fairly normal 2010's America. Visit the city, marvel at modern technology, maybe meet Shin in a cafe somewhere. Just... Maybe don't follow him to that mysterious building he keeps frequenting if you don't want to run into any more merry murderers.
The secret life of Shin: Castmate option. Eddie got to see Shin get snatched up by some sort of demonic... Thing. Then he returned half an hour later. However Eddie handles this, things go more or less back on track after Shin takes Eddie to see his furniture. After the adventure with the grave robber, Shin manages to stick around a little longer than he does in canon. Does Danny want to ask why Shin suddenly cares more about his brother? Do Zack and Ray have the pleasure of touring his floor instead of Eddie's? Feel free to hit me up for plotting.
I've been everywhere, man: The AU where Shin gets stuck in someone else's world and has to survive until he figures out a way back home. Maybe he'll curb his murderous urges for a little longer while he gets a tour of your place.
Lizard end?: The AU where Shin is stuck as a half void. Luckily for him, it doesn't get too much worse, but he has to hide the fins from the public and deal with that horror hunger. At least in his world he's already getting a steady supply of victims, but...
Anything goes: This is basically a wildcard option. Make up your own prompt or steal a meme.

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[ Does she think of him as nothing more than a beast? Not shocking, but he resents her opinion all the same. ]
We have to worry about the trials too, in case you've forgotten. You kill me, you'd have to frame someone else if you don't wish to be executed.
... Likewise if I'm compelled to attack you. I'm not risking that possibility tonight.
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And you insult me, if I aimed for your head it would have long ago been separated from your shoulders.
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[ He hasn't forgotten how she almost killed him on the spot, ya know... Especially after the outcome. ]
... If you're not here to kill me, then what do you want?
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[ Shin can take that as he wishes, but given how clear her words usually are, the last sentence is tacked on and clipped. It's easy to say too much under circumstances like these. ]
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Like how it was in the Twilight, more or less?
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I shan't repeat myself.
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[ There's a moment of awkward silence from his side of the door. ]
... If this is like those other motives... We should be back to normal by the morning.
[ He doesn't sound so sure about that. ]