I mean, fights in manga last chapters, plural, more often than not. I'm having trouble dragging the fight I'm currently working on out, without it getting repetitive. How do they manage so easily to keep the fight interesting? I need to figure an answer out for that fast, since this is excruciatingly painful to deal with.
...Still, in spite of the forced progress, I have a fair idea of what I'm going for, and I think the finishing length after all the exposition will be at around standard manga chapter length, ~30-40 pages or so. (The 'episode' is basically broken up into three parts: fight, aftermath, and aftermath of the aftermath. Character exposition is for the fight, worldbuilding is for the aftermath, and a little bit of both with the hook ending is there for the final part.)