The magic of a returner is very special in the manga. It has diverse and complex manifestations, and it plays a crucial role in driving the plot forward. Also, it gives the characters a distinct edge in various situations.
The magic of a returner is special in this manga due to several factors. It could be its origin, the way it's controlled or the hidden abilities it unlocks as the story progresses. Also, it might have a connection to the returner's past life or a secret destiny.
Well, it's hard to say exactly without reading it, but it could be that chapter 71 shows a crucial decision made by a character that changes the course of the story. Or perhaps there's a new location or magic item introduced that adds an exciting element to the plot.
The returner's magic could be special in terms of its appearance. It might have a distinct visual aspect, like a unique color or pattern when it is cast, which is not seen in other magics in the novel.
The uniqueness of the returner's magic in the novel might lie in its origin. It could be something that is not commonly found in the world of the story, perhaps a magic that has been lost for ages and only the returner possesses it.