Is such power (as in dangerous fantastic fiction) real or just a fictional concept?
Well, it's clearly a fictional concept. In the realm of dangerous fantastic fiction, powers are used to build a world that is different from our own. These powers are not real because they often defy the laws of nature as we know them. For instance, characters with the ability to time - travel or control minds are common in such fiction. However, in the real world, there is no evidence to support the existence of such powers. They are a product of the author's creativity and the need to create a thrilling and unique narrative.
It's just a fictional concept. In dangerous fantastic fiction, powers are often created by the author's imagination to tell an exciting story. They don't exist in the real world. For example, superheroes with the power to fly or shoot lasers from their eyes are fun to read about but not based on real - life capabilities.