Maybe it could be the unique way of casting spells. For example, the magic in this novel might require special incantations that are different from common magic in other stories.
Another aspect could be the way the magic is used. The characters in the novel might use magic in a highly creative way. They could combine different magical elements in unexpected ways to achieve amazing results. For instance, they might blend elemental magic like fire and water in a way that defies the normal rules of magic, creating something entirely new and special.
Perhaps there is an outcast character who discovers the special magic. This character might be different from the rest of the society in the novel, and through some kind of accident or self - discovery, they find that they can use this special magic. This could add an interesting dynamic to the story as they struggle to understand and control their newfound power while also facing the challenges of being an outcast.
In the 'Returners magic should be special light novel', the specialness of the magic could lie in its origin. If it's tied to a particular ancient or forgotten civilization, that would make it unique. Also, the effects it has on the characters and the world around them could be extraordinary. For example, it could be used not just for combat but also for healing in ways that are not typical in other magic systems. And the way the characters learn and grow with their magic abilities could also contribute to its specialness. If they have to face moral dilemmas when using their magic, it adds depth to the magic system in the novel.
I'm not sure exactly as I haven't read the novel in full. But usually in a magic - based novel like this, there would be a young protagonist who discovers their magical abilities. Maybe there's also a wise old mentor figure who guides the protagonist in understanding and using their magic.
Well, it's possible. Special hiatus for returners can make the story more interesting by creating anticipation or allowing for character growth off-screen.
I'm not sure specifically as I haven't read the novel in full. But it could be the protagonist who is often the one with some unique magical ability in many light novels.
In many'returners' novels, special magic might include time - related magic. For example, the ability to reverse time briefly to correct mistakes or foresee future events related to their return. Another could be location - based magic, like being able to teleport to the exact place they left when they return.