Update: Okay i really have no idea what's going on with the manga schedule anymore or whether it's going to end at vol 3.
So I made a reasonable assumption that it would end at vol 3 due to this official statement saying the manga will end this year here ( I had estimated that vol 3 would have come out mid year) :
https://x.com/MangaMoguraRE/status/1874430127406231929
And many other sites that had reposted this news snippet.
And at the release rate of 1 chapter every 2 months, and the mangaka saying the climax is ch15+16 and how they speedrun a lot of things in vol 3 manga, I had reasonably assumed it would finish in vol 3 as there's no way there would be another vol since 1 novel vol can usually only stretch up to 3 vol of manga at most(some mangas finish it in only 2) and ch 16 is a good ending point with very little going on past that that could be stretched out to fill vol 4 (unless they put some major manga fillers) and no way they could fit another 5 chapters for vol 4 within this year.
But according to a comment the mangaka recently posted here
https://x.com/yrss6/status/1938560190443606449
It says the last chapter will be released next year instead?

I'm scratching my head at this rn. Did I have the wrong definition of what a climax means?
The way they condensed a lot of scenes in vol 3 manga, I don't know how they'd have enough material to do another volume because as I said, there's not a lot going on past that.
And let's say ch16 gets chucked into vol 4, it's been 2 months since ch15. There should at least have been an announcement for vol 3 manga reservation by now🤔
I really don't know anymore😂 Guess we'll all just have to wait for more info. Ch16 comes out 11/7 by the way. And if there really is a vol4 we'll have to wait for, my vol 3 release schedule for this manga will be stretched out to bimonthly in tandem with the raw release. Beats having you guys wait 5-6 months for the next chapter like you're currently doing, right?
I'll be editing out my previous raw release speculation in this thread in light of this new information( can't edit anymore on the other chapter topics apparently)
Edit update 7/16/25:
We got another headscratcher update
According to a q&a post here:
https://x.com/yrss6/status/1943923985466699939
The mangaka said that he doesn't know for sure when vol 3 will be released but it will most likely have a release date of next year or the next, seeing as vol 3 also contains the last chapter that has also been rescheduled to next year.
Keep in mind that both vol 1&2 have 5 chapters per volume and the tentative vol 3 already has the required subsequent 5 chapters already published.
This post here also says he expects ch 17 to have a release date of mid September here
https://x.com/yrss6/status/1943876171222942096
So since we've already overshot the expected # of chapters per volume by 2 chapters and doing the math at 2 months per chapters, starting with September and with a tentatively postponed final chapter date to next year, the earliest I would predict the last chapter to be published is January at ch19. And that's already nearly a full other vol right there.
I have questions. How do they expect to fit 4 whole extra chapters to vol 3? Why not just make it into vol 4? Can't they just add one extra chapter to round it off to 20chapters to end?