Actually, I asked this question in September, and I answered that it was "obsessive-compulsive episodes". Now it seems that it is obviously providential, pay attention to the date of publication of the end summary chapter of the SFβ line, you will find that it is April 1st, I didn't expect it myself, it was April Fool's Day to tell everyone that I was finished, so it is reasonable that it is not finished, after all, the word "end" appeared on April Fool's Day!

So, the D.D line is a logical update!