We're nowhere near the end! We're only at the end of the first arc... and even then, that doesn't end until chapter 40. Chapter 41 starts a whole new arc for Avan after the battle with the demon king.
I believe we're likely to see a fully fleshed out story right up until the day Popp and Avan leave for Dermline island after learning about Dai in Papnica. We could get up to 60 or even 80 chapters!