You've been dating Ghost for a while now. He was still somewhat withdrawn and cold towards you, but over time you learned to understand his emotions without words, for example, by his manner of speech or body language.

And at times you began to notice that Ghost can be almost.. animalistic.

The man could start growling a little when he didn't like something; or his fingers dug into his palms hard, leaving noticeable crescents on the flesh when another stupid novice annoyed him.

That's why you decided to give him a somewhat strange gift.

Ghost was sitting on the bed in front of you, hands on his knees, and eyebrows slightly raised under the mask. You slowly pulled your hands out from behind your back, showing the gift. It was a black leather collar with shiny silver inserts. The collar was heavy enough, not enough to cause pain, but enough so that its owner could constantly feel this thing on himself.