Well, in many horror mirror stories, there is a history attached to the mirror. It could be that the mirror has been part of some dark ritual in the past or has witnessed a great tragedy. This history then seeps into the present and affects those who come in contact with the mirror. Also, a change in the environment around the mirror is common. For example, the room might get colder or there could be a strange smell when the mirror starts to act up. And of course, the people who interact with the mirror usually start experiencing strange and terrifying events in their real lives that seem to be related to what they saw in the mirror. This creates a sense of dread and paranoia.
There was a man who bought an antique mirror from a flea market. When he hung it in his bedroom, at first, he just noticed a slight distortion in his reflection. But then, one night, while he was half - asleep, he saw the mirror start to ripple like water. Out of the rippling mirror emerged a hand, followed by an arm, and then a whole figure that looked like a long - dead relative. He was so terrified that he ran out of the house and never went back.
Here's one. A man moved into a new house. The bathroom mirror seemed normal at first. But then, he started to notice that his reflection in the mirror sometimes had red eyes. He thought it was just his imagination at first, but it got worse. One day, he saw his reflection grinning wickedly while he was just standing there looking normal. He was so scared that he smashed the mirror.
The unknown nature of the figure in the mirror makes it scary. It's something that defies the normal rules of reality, like a being that exists on the other side of the reflective surface but can interact with our world in a menacing way.
Once upon a time, there was a girl named Lily. She had an old mirror in her attic. One night, when she looked into the mirror, instead of her reflection, she saw a distorted face with hollow eyes staring back at her. Every time she blinked, the face in the mirror got closer. She ran out of the attic, but she could still feel the presence of that horrifying face following her. She never dared to go back to the attic again.
The scariest thing could be seeing a malevolent entity that you can't escape from. For example, a demonic figure that slowly emerges from the mirror and starts to invade your real - world space, reaching out with its cold, bony hands as if to drag you into the mirror's world.
Once upon a time, there was a young girl named Lily. One night, she got up to use the bathroom. As she washed her hands, she looked into the mirror. But instead of her own reflection, she saw a ghastly face with sunken eyes and a gaping mouth. The face started to move closer to her in the mirror. Lily screamed and ran back to her bed, covering her head with the blanket. She never looked into that mirror at night again.