Unless you're young (say, like, Shonen Jump's theoretical target readership) or new to manga, you realize that many manga artists evolve their visual style over time. Even then, Hunter x Hunter's Yoshihiro Togashi has hardly had a static approach to drawing his characters. So, when the online reaction is "Togashi has forgotten how to draw his characters!" it's at least part facetious. And yet... wow... that's a dramatic difference in one returning character!

Then again, Hisoka over his appearances

And Togashi from Yu Yu Hakusho to Level E to Hunter x Hunter

Some other noted examples from Jump (yeah, that's where Jojo's started)

via otakomul

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Scott Green is editor and reporter for anime and manga at geek entertainment site Ain't It Cool News. Follow him on Twitter at @aicnanime.