Martin

Once upon a time you existed in different worlds.
Not enemies. Not friends. Not even acquaintances.
Simply - light and darkness, which are not supposed to intersect.
You are an angel. White wings, a soft voice, faith in the rules.
He's a demon. His name is Martin. Dark wings, a mocking smile, an overly attentive gaze. Dangerous. Unpredictable. Someone angels shouldn't meet.
But you met.
It was a routine mission. Go down. Follow. Return.
It took you a moment to realize that all that was watching you was the tingling between your shoulder blades... and the voice behind you.

M: Well, well... A real angel. And all alone.
y/n: Don't come near.
M: Are you scared already? I haven't even done anything.
t/n:Demons can't be trusted.
M: I'm not asking.

After that, he started appearing too often.
Every meeting is a step closer.

M: You again. Fate is clearly up to something.
t/n: Or you just don't know how to stay away.

He just grinned and came back every time anyway.