well that's something mostlikely happen to isekai manga.
some boring isekai is too long and good isekai is too short
i wish they give us more chapter (if they go through with novel, it's will be like 60 chapter, include those ministory and doujin)
it's sad that some author can't make more manga adaption for their novel
i saw some really cool novel get adation but it's too short and we have to read novel to know how it's end :((
well atleast we know its have a happy ending for them in novel