The problem with this body, is it's scars. There are many of them, all unfamiliar covering the body you inhibit. You grew up with one scar you have on your arm you got from using an oven incorrectly. This body is filled with them. So many aches and pains that you don't know the cause or reason behind. They persist even after being healed.
The problem with this body, are the calloused hands. It's far too comfortable with the weapons you now carry. Even as your mind freezes up in terror, the muscle memory stays true to form and completes the kill. The way it walks is different, the food it eats is different, even the music it wants.
You are a stranger trapped inside it, stuck there by obligations it has, and a desire to live. The problem with this body is-
The problem with this body ,is that it was formerly a vampire. It is no longer a vampire, which is mostly a good thing. Maybe your soul did something to revive it?
For all that vampire talked shit, its body is weak, and it relied on other demons and explosives to do most of its fighting.
The problem with this body are how it fails to move in the way you want it to.
Its hands are calloused in the wrong spots, and it's supernatural strength has faded away whatever muscle he had naturally. It moves fast at the cost of being unnatural to pilot.
Fights in it are an embarrassing Shit-fest at first, and it's harder to use magic when this body has no aptitude for it.
You win because you are (unlike him) actually good at fighting.
It's better than being dead, but that Takashi was part of a gang hurts most of your investigation attempts. It comes with strings and favors attached that you don't like. It's harder to think, like a wall is blocking you. Vampires are said to not have souls, but you are starting to wonder, because what is blocking you? It is simply harder because you are dead.
It means you can not shop at your favorite weapons store. Vampires are shapeshifters, but this body is no longer a vampire, just a dead man walking. Food does not taste the same, and that was one of your joys.
The problem with this body is-
-That it is becoming familiar, that the feeling of holding a weapon is slots right into place next to the satisfaction you feel when a hit connects, that the food it likes feels comforting instead of foreign.
The negotiations get easier, and fighting beside demons is normal instead of strange, the familiar sound of Rei Reiho casting now a comfort instead of a distraction.
You see your obituary in the newspaper and the face upon the page feels foreign to you, when you see something different inside of the mirror everyday. You had your other face for years, and yet it looks foreign now.
You feel comfortable in this body, like it is yours, and that is the problem,-
- Is that your soul has reunited with your body again, and yet your limbs remain dead and heavy?
And can it be that being a vampire was lighter then being a human?
But this is your body, you know its scars, its pains and its ache, and limits. The precise amount of exercise you do with it to keep it at peak. Arms that you swung weapons with, hands that hold and load a gun, legs that dance and run and kick. The singing lessons you took to become better at casting that were useful when you went to karaoke, the precise way it can lounge into a chair to be both comfortable and annoying.
This is your body, and you know it better than anyone, and yet it doesn't respond, a dead, limp thing on the ground, and the reason seeps into you with a cold horror.
Your body is no longer responding to you, and that can only mean-
-That it is not yours