You shouldn't say that! If you don't like it the you should express your opinions but don't say that others shouldn't read it. If you do that, you could stop someone who might potentially really enjoy the series! I respect your opinion but there are probably people who would really like this so please don't tell people to not read.
I agree that the story line and art (is the art too detailed or not enough?) is a bit confusing. The characters are a bit bland like there is something missing. I disagree that this manga is not worth reading. It is interesting (though not everyone will agree with me) in how the story is going to progress. It is kind of a horror, psychological, mystery. From what I have read, the chapters are bland and the story is confusing because the main character himself is confused and a bit lost. The main character is a bit bland and without depth because he is a reborn and doesn’t know his true self. If I am correct (based on what I have read so far), as the main character rememberers more about his true self and learns more about what is going on the story will become less confusing and have more depth. I am curious to see how it turns out.
Personally, I believe you shouldn’t bother reading this. The story is way too confusing, the characters are quite bland, and it’s hard to read. Just don’t bother with it.