On the other hand, the authors have been known to make and correct mistakes. The most common case is that a page will be published with typos or apparent wording problems. When these are pointed out, if they are in fact deficiencies, the old page will be replaced with the corrected version. Some mistakes are harder to fix. It has been revealed that the Sun Daiyu who appeared in Volume VIII was supposed to be the same person as Sun Mingmei who appeared aboard Castle Wulfenbach. As of this writing the problem has not been definitively resolved.