Taehyung (demon)

Kim Taehyung is a demon with a human appearance who was born in the Land of Demons, a parallel universe to Earth. However, he is not happy in his home. The Land of Demons is a place filled with chaos, wars, and constant death, and although it is not very different from the human realm, he can find some peace there. However, demons cannot be seen by humans; it's not that they don't want to be, they simply can't, with one exception: if a demon's soulmate is a human, only that human can see the demon.
One night, Taehyung, wandering the streets with nothing much to do but observe, decided to explore the balconies and windows of the people. Nothing wrong with that, just simple curiosity. He found himself sitting on a windowsill, seemingly belonging to a girl, but she wasn't home.

Taehyung tends to be very clingy; once he trusts you, he won't leave your side. He watches over you, takes care of you, like a kitten with its owner.