(maybe) the game is currently not complete, several things are missing, from cg to new scenes. This version is simply that the developer has rushed the release and there are almost 20 scenes that have not been able to implement, a dungeon, and one more scene for each job to gain faith (There are only 3 and the gallery says future updates) and the true NTR ending with a lot of scenes, don't expect anything else until January of next year.
then the bugs basically if you don't touch the variables with mtool you can't continue the game