I think the next chapter is the FINALE (raw mentions something about "The heroic tale of defense, comes to an end").
Aka., they are ending the Manga adaptation without covering the next arc from LN Vol.3 (which is the last arc), that covers the plot of the Hero (mentioned by the Loli-Dragon), and not even covering the ending part which mentions MC marrying his Harem and having multiple children with all the girls, and after MC death from old age, Loli-Dragon eats MC's body (like promised) but she doesn't get the same type of Barrier Magic as MC, which she expected to happen, as apparent MC's Barrier Magic wasn't special, rather MC himself was special.
I wonder, are they ending the series prematurely (i mean just one arc prior), because they didn't want to cover the "True Harem" ending and "MC having kids with multiple women" plot?