In "The Dissociation of Haruhi Suzumiya" and the following book, can the character Yasumi Watahashi be considered a slider? (I'm not naming her in the title because she's not in the anime).

Since she essentially travelled between the two timelines and her purpose was, if I remember correctly, to reunite them. I read these books a few years ago (in a fan translation) and while I was pretty convinced she was the long-awaited "slider," most of the fanbase seemed to think she wasn't. I couldn't find any good reason why she should or shouldn't be or, in fact, any canon or otherwise generally accepted definition of what a slider is - I've always assumed it was someone who travelled between alternate timelines.

I'm rereading the beginning of Dissociation right now and Kyon reminds us that a slider has yet to make their appearance, reminding us that we should naturally expect one and, IMO, maybe foreshadowing the end of this arc and implying that Yasumi, even though we learn later that she is not a real individual, is "the" slider we've been looking for.

I'm aware that the series has been left unfinished and we will likely never know if another slider was planned.

  • Update : I actually found an in-universe definition of "slider". In the published English translation of "The Surprise of Haruhi Suzumiya" : "a slider from another world". I'm not sure if "world" is used in a precise sense (as opposed to "dimension" or "timeline") or in a general sense. If the former, then Yasumi isn't a slider. But I'd like a second opinion ^^
    – Pwassonne
    Jan 25, 2016 at 10:18

1 Answer 1


The only character which can be considered an actual Slider (https://en.wikipedia.org/wiki/Interdimensional_being), albeit temporarily, is Kyon. He was the only character (an actual person, rather than a temporal construct made by Haruhi as Yasumi was) who experienced first hand existing in two different dimensions during the events of the 4th novel(the disappearance of haruhi suzumiya).

  • So Yasumi doesn't qualify because she's not a real character? Okay :/ but it is clear enough that Kyon isn't "the" slider we're supposed to expect, so if Yasumi isn't either... that means there could be / have been a slider in the sequels that will probably never be written? ^^"
    – Pwassonne
    Feb 27, 2016 at 8:27
  • Also, accepted because I realize there might not be a definite answer or one better than yours ^^
    – Pwassonne
    Feb 27, 2016 at 8:30

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