I know, but that's... highly unlikely. I'm not saying to use it as exact metric or anything, especially not now that people got notice of it, lol, but at first, it's not nothing that Undead or Mashle were in high positions. Does that mean they are like the 20th most popular manga in Japan? Obviously not, but it means that some people care por it. The fact that people could just keep voting.... is more of a hypothetical, really. For a series to have obsessed fans at this point, it needs to have a decent quantity of fans in the first place. There's nothing that absurd on the list (well, there wasn't, I don't know now) for me to believe it was really distorted.
Again, it's not that you should look it as actual popularity rankings or anything, but taking it as a list of 100 series people are enjoying right now, it's sorta fun. And kinda good for new, unproven series to be there.
