Thank you so much for the kind words! If everything goes well, I'd say the full game will take about one more year to finish. I've been developing XIRIZ in my spare time while going to community college, so now that I finished school I work on the game during my off hours from work.
Edit: I'm blind and misread what you asked lol the finished version is planned to take around 6 hours to beat on a first playthrough, with an extra 1 - 2 hours on top of that for a %100 percent playthrough!