@AnonymousWeeaboo
I said this a few chapters back, but this story has basically devolved into a dick measuring contest between the "Hero" and Diedhauser. Both have seemingly uncapped power, where there is always a "stronger attack" or somehow they "manage to pull through, just in time". You would literally have the same battle if 2 shounen isekai MCs went and fought each other because then their levels of plot armor would make both invincible, making the fight pointless from the start. All this does is take that very scenario and make one of the MCs a "villain".
In other words, when your first real battle already has end game weaponry, the story literally can go nowhere once it is over. So after this battle, I cant imagine this story beginning a new arc. Author may just be milking sales at this point. No backstory, no world building, no build up. This story is essentially the big end battle and that is it. It feels like this would be so much better if maybe there was like 100 chapters of wtf happened before all of this, so that this fight actually has better meaning and impact. All we got is a few scattered "flashbacks" here and their so that new characters are not completely random.