It's literally after the ending of the entire WN, so you'll be spoiling, well, the rest of the story. Not sure if you caught something else, but there's another huge fucking spoiler in the first chapter.
@Narehate I stopped right after see his name. Probably i either didn't see it yet or just didn't notice it. But man, that's sounds like so far from the current manga. I don't think i will ever touch this sequel at least for a couple of years.
I feel like I shouldn't read this. But then I did and now I'm itching to see how the roster expands. Just how they got in and work for him is a mystery I wanna unravel right now..!
Don't mean to sound like a retard, but i hate the fact that they have the time and resources to produce this side story trash instead of progressing the main story.