How Not To Summon A Demon Lord Vol 21

Once again, a blasting moment as the war wages between both the races and the fallens. Multiple have either fallen or been taken out of commission as the strong slowly start taking the front row. A quick and decisive battle ensues as the top of the food chain between both races appears for the victory.

So, this long-awaited war just flew by with just two volumes. I would have thought it goes for longer, or more like drag it out a bit. I guess the author is being rushed or something because this volume alone already reaches the climax of the war. There, I thought it would be a grueling battle as both side causes serious damage to each other. Then, it would go on until Diablo comes back and starts a fight to reach the Demon Overlord. This feels rushed and seems like it might not get a good conclusion or a good flow for the conclusion of this series.