The Dark Descendant of Douluo Awakens

The introduction is weak, mainly because it doesn't have much to say. I don't ask many people to like it, as long as one person recognizes it. At that time, I thought of the name Lord of Shadowstream, but I also considered the existence of Kayn, so I came up with this name. It also contains Darkin, but I didn't add it to the title of the book because I didn't know how to name it. This is my first time writing a book. Please bear with me. If you don't think it's good, don't read it. No one is forcing you to read it.