Definitely. It should be a continuation. Since there are still so many loose ends in the original story, like the full story behind Allen's transformation and the ultimate fate of the Black Order. 'D Gray - Man Remaining Story' will most likely carry on the story to answer these questions.
The D'Gray Man manga has indeed finished. It wrapped up with a satisfying ending that tied up most of the plotlines and left a lasting impression on readers.
The D Gray Man manga concluded in 2022. Throughout its journey, it gained a loyal fan base and provided an engaging story. Its ending marked the conclusion of a significant chapter in the manga world.
I'm not entirely sure as I haven't read it in detail. But generally, it might be related to the 'D.Gray - man' series, perhaps exploring the story from a different perspective, like reversing the normal flow of events or focusing on the antagonists' side more.
It's about a world filled with Akuma (demons) and the Exorcists who fight them. The story follows Allen Walker, an Exorcist with a special power in his left eye. He embarks on a journey to stop the Millennium Earl, who creates Akuma, and to protect humanity.