I did try to get into it, but just couldn't... At best, it felt like fanfic of the original story, and that isn't a high compliment.
I kinda hoped all the time that it would be its own story, with name changed and a little tweaking, it could have been just own story in the same world - and it would have been much better to read, even with the amnesia arc, because it surprisingly wasn't bad amnesia arc (it didn't drag).
If I remember right, I just knew because I think for a long time there had been empty Payday slot in b@to connected to the author for a long time, and figured there that there will be sequel - but it took like forever to happen, and if I hadn't had that knowledge somewhere back of my head, I probably would have dismissed the Payday story.
It still didn't help much, I still can't connect those two manhwas. But at least I knew far beforehand there was connection.
I'm going to be forever disappointed that they didn't even try to find at least little similar style artist.
Maybe that is why it took so long for Payday manhwa to happen, the black Korean corporation didn't want to pay enough for an artist, so they might have taken any artist that will accept the cheap contract. (This is just a guess, but wouldn't be surprising if it's something like that.)

Oh, so that's why the plot was already plotted by the 1st chapter on payday. I'm already at chapter 3 and decided to check and saw mayday under the author, and the comsec confirmed it. Thanks!
I've finished reading this year's before and I didn't know that there's a sequel for it. Time to reread, hihi