SonOfMalassa
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What is meant is that, according to the plot, a castle was needed that could be linked to the Academy. The Academy had conflicts with the orcs, so the orcs appeared. The English text sounds like this:
<...> in terms of story there were a lot of contradiction with the Academy so we need the orcs, let's put in the orcs. <...>
Yeah, thanks. This probably means that the plot of the Academy or Orcs campaign will be related to the creation of the orcs in 335 or their rebellion in 467-470.