How Could My Future Possibly Be Full of Demon Lords?

The premise is very confusing. It's supposed to be set in the future, yet the characters are constantly testing, deceiving, and betraying each other. It feels like the trust between the future self and the protagonist isn't even as high as in the book where they summon an old man every week or a stranger.

I don't understand. The author starts a new book and then cuts it again. Actually, the author's writing style is quite good, but if they don't settle down and write a good book, and keep dabbling in different things, they will never have a hit and will end up achieving nothing...

I remember reading a similar book before, where the protagonist summons his future selves, each incredibly powerful, changing weekly, and each allowing the protagonist to inherit a different ability. The first was a world-destroyer whose words could become law, the second a savior who could erase everything with an eraser. Now, the protagonist's teacher is a fire-wielder, and the protagonist has taken up that profession. Is this book inspired by that, or is it by the same author?

The writing is alright, but the comments section said the author was an old eunuch; now it seems like that was the case.

In short, none of these kinds of stories are truly outstanding. It's fair to say that whether now or in the future, the protagonist can only drift along, or perhaps have extraordinary talent that makes a small splash, but the future protagonist will always be a nobody. If I had to point out a flaw, it would be that the writing emphasizes that the protagonist himself doesn't even know who he is.

The plot is so long-winded; seven out of eight chapters are just dialogue.

It was cancelled before it was even released! What happened? I only had it for a few days!

They don't even think about why their future is like this.

Not bad, it's a good read for me.

The protagonist's current counterparts are all essentially the same, and those summoned by the protagonist are all losers who failed at different points in the story, which is why he wants to change everything and yearns for a better future.