I mean, the work wasn't axed anyway, manga completely adapted the short novel adding some original stuff, and there was nothing else, author may be somewhat busy yeah, but compared to how many novels it had before, is only working on the LN of 2 of them and no WNs (Abandoned Sage and Aristocrat, which got a volume in December and March respectively), as for the adaptations, who knows how involved author are with them in the first place, what i found weird is how they advertised the end of this work as only "
Part 1 Completed" in the magazine issue ToC given that the novel for this haven't been updated since 2018, been a year since this adaptation ended, so who knows if a "Part 2" is even happening, which always make me wonder publishers picking up works like this, they usually end as short as their novels, sometimes they end up expanding from their original
You may be losing your money here, since like i said in my previous comment, manga adapted the whole available thing, so there is nothing to advertise anymore, specially something that haven't been updated in so long lol, WN have only 39 chapters and LN 1 Volume, but yeah gotta read for any possible change if someone even read the source novel, since the artist did say that they added original stuff in the middle