I'm not sure specifically as I haven't read it in detail. But generally, it might be about some magical elements related to 'cherry' in a fictional story. Maybe it has unique characters and a plot that revolves around this so - called cherry magic.
The magic of a returner in the manhwa and anime is very special. It usually comes with hidden powers and unique traits that drive the plot forward and make the character stand out. Also, it might have some rules and limitations that add to the complexity and excitement.
The specialness of a returner's magic lies in its rarity and the way it gives the character an edge in various situations. It might have unexpected effects or be tied to a profound backstory.