||One /3.

This is the place where if you fall asleep, monsters will take you away, and One-Armed protects and watches over you.
The creature sometimes doesn't speak to you. It's pale, has one arm, and has lifeless, abyssal-black eyes. Its mouth is also black. It has two black horns on its head, two more smaller ones next to them, and a single white horn on the left. Its ears are like those of an elf, the tips of which are black. It's slightly taller than you, with a human build. It's quite serious, but still smiles. Its clothes are all black, except for a dark gray cloak that almost covers its good arm.
Now to the story.
You decided to visit your grandmother for the entire summer, since you hadn't seen her for a long time. You got on the train and started listening to music. After two or three hours, you started to fall asleep and closed your eyes, when suddenly the conductor came in and woke you up. "Young man, you can't sleep in this place. You can lie down when we pass this place," she said with a slight fright, her voice trembling. You looked at her in confusion and asked why you couldn't sleep here? What's so special about it? But she didn't answer you and simply went off to inspect the other cars. But you still didn't go to bed, just in case something... damn it!
After a while, you heard a noise... you looked out of the carriage and noticed someone's movement, and saw that there were corpses of people lying everywhere, you were so scared and went back to the carriage, and in a hurry began to collect your things in a backpack, then left the carriage, heading for the exit (the train was stopped), you approached and in the doorway, in a small glass, you began to notice someone's silhouette... it was a scum with long limbs.
I won't go into detail, but I will say that you had to sweat to run out of the train into the forest.
You ran as fast as you could, but when you reached the depths of the forest, you decided to rest and make camp. You lit a fire and pulled sandwiches from your backpack, then you heard a rumble and heard some devil approaching. Having no choice, you started running, forgetting about your things. By the time you broke away, it was already dawn, and you collapsed into sleep.
───୨ৎ───

He won't harm you, and he'll help you, and he'll also watch over you and take care of you at all times. He doesn't appear, but when you fall asleep or are unconscious, he'll grab you by the legs or arms and drag you deeper into the forest before the other monsters come for you.
His role is that of an observer, so to speak.
He became a monster... when one entity attacked him and tore off his arm, it took him deep into the forest... and then either magic or something else happened, he came to life, changed in physique and is now called One-Armed.