It depends on which manga you're referring to. Some are completed, while others are still ongoing. You might need to provide more specific details about the manga for a precise answer.
Well, to know if a manga is finished, you need to check the latest updates from the publisher or the official manga platform. Sometimes it's clearly stated, but for some less popular ones, it might take a bit of digging.
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.