read chapter 1, does it get good and is this worth grinding through all 400 or so chapters?

don't grind through all 400.

the ending is so fucking terrible it ruins the whole thing.

read up to the 290s

did the author get squeezed to end it quickly or something?

sounds like a terrible finish for something that has a promising premise

Worse

It went into a Hiatus and when it came back the chapters kept dragging on with terrible story and dragged on into long useless fights

This post was edited by Sena on Jan 11 2014 07:00pm

the story development in gantz is pretty amazing so if u like it why not read it

kinda agree w/ the ending tho it was sort of disappointing and expected at the same time

Gantz is absolutely amazing.

Then all of a sudden it turns to complete shit.

I agree, read it 'til the stupid stuff starts happening (you'll recognize it as soon as it happens) and then drop it.