Ghosts Are Coming

Various "ghosts" suddenly appear or gradually awaken in the world. They are not ghosts in the traditional sense, but rather supernatural phenomena or entities that follow a specific "killing pattern." Cannot be killed or destroyed by conventional means, but can only be restrained, imprisoned, or fought through special means. A very small number of people managed to survive an attack by a ghost and accidentally absorbed part of the ghost's power into themselves, thus being able to use the ghost's power. And the protagonists are these very few people...