Dragon Ball Z sets the bar pretty low for shows that only include "durfighting" for their entire run. Bleach, Fullmetal Alchemist, Yu-Yu Hakusho, all bad shows, but they're at least above DBZ. Enter Inuyasha.
You've heard of the bar being low, Inuyasha grabs hold and drags it to the depths of hell.
A black hole of virtually anything enjoyable, I can't see how most anyone could possibly enjoy this.
But alright, enough bland insults and let's get to some analyzing!
The premise (I refuse to call it a story) of the series is the ultimate in McGuffin: A random jewel breaks into an indiscernible amount (Yay for flexible episode numbers!) of pieces and a bunch of jack-wagons have to run after it.
Characters? No, not characters, just stand-ins.
Inuyasha himself is just the typical "gotta get stronger derp" protagonist we've seen a thousand times before. Kagome is an awful Mary-Sue, and their entire troupe is composed of virtually the same person in a different costume.
The villains, every. Single. One. Don't show any emotion short of ambivalence. You can't hate these people, root against them, because they aren't people. Just bored voice actors reading lines of what, ultimately, is for five year-olds.
The art direction and animation in this series is the worst. For something that relies heavily on action, they sure show very little of it. Stilted animation, "telling, not showing", and the old trope of reusing shots are plentiful here. If you weren't actively looking for it, the action would pass you by in an instant.
With a terrible premise, bad acting, little in the way of actual animation, there is just no show here to even review; there is nothing to watch. As such, there is nothing to enjoy. This show gets, and earns, a 1 in every conceivable category, and that is simply irrefutable.