FOUND IT!!

In the depths of the forest:

The terrain within the forest region was quite uneven. A varied topography like this created the best areas for having a hideout. Although there would be a need to eliminate the beats around the location, once formed, it would become an important strategic location. 

The organizations interested in having their hideouts in these areas were mostly bandits and assassins. Both 'Shadow Moon' and 'Black Dagger Hall' acquired a sanctuary in the forest regions. It was not until sometime later that these hideouts decided to merge.

The human resource in the combined operation was vast, and the location developed into a cardinal operation base for either of the groups.

Within the depths of the hideout, a secret meeting was taking place.

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