I think it is. The world-building and characters are well-developed. The plot keeps you engaged throughout. But it might not be for everyone, depending on your taste in manga.
Well, it could be that the manga has deep character development or explores themes in a thought-provoking way that makes blaming it unjustified. Maybe the issues people might have with it are more about personal preferences than actual flaws in the work itself.
To create manga stories in vol 39, focus on unique plotlines, diverse characters, and dynamic visuals. Experiment with different art styles and pay attention to details for a captivating story.
To master it, first, study the anatomy and poses. Then, focus on line quality and shading techniques. Also, look at examples from professional manga artists for inspiration.