All is working very well. I created a class with my mukyuukkuri with very good results, since 90% of the yukkuris who followed its class got out with gold badges. Of course, there are always some very troublesome yukkuri, but I take them to The Chamber, and, usually, they are really good-natured when they get out of it. Recently, I noticed that yukkuris tend to be more afraid of The Chamber than The Factory. Maybe it's because that, when you enter in the Factory, there is no turning back. It is after letting my mukyukkuris, and getting back to my home, that I notice that something was wrong.