This is a really great RPG Maker game so far and I'm excited for what's to come. So much detail and effort was clearly put in and each enemy and the boss was fun to fight! The only thing that I can complain about is putting RNG in battles, but its honestly a minor nitpick. I thing a good fix for this could bet to make it so that the RNG to stay trapped in the vore struggle diminishes each time you struggle.
I'm currently trying my best to eliminate RNG as much as possible. In chapter 2 the combat will be somewhat updates. Vore struggles will have a set amount of times it can fail before its forced to work, and strong enemy attacks such as Scaruby's fireball will have a cooldown, as will their vore attack so they cant do it over and over and over. But I'm glad you enjoyed the game!