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The local ammunition factory, opened in E7-217, is the first 100% youkai-owned and youkai-operated factory of its kind, sourcing most of its raw materials from the [[Kazama]] mines.
Headstamps of ammunition produced at the Aosaidan factory are typically marked with the letters '''AD'''. There is no official explanation for what these letters stand for, but the most commonly-accepted theory is that they are a shorthand for "'''A'''osaidan '''D'''anyaku" (青祭壇 だんやく), which translates to "Aosaidan Ammunition".
