The DLC will unlock the “Prize House” in the new prison building. This building will earn research points by reading all designers and mysterious drawings to develop a series of ancient weapons and equipment.
In addition to unlocking the building, the DLC will unlock four sets of the Japanese Warring States Armor Set (special package attributes) and three Japanese Warring States swords.
They are: Yukio Shinoda, Tomohiro Takeda, Yukio Yamamoto, Sakuragaoka Yamagata, Shingo Kotobaki, Togogaya and Shogun.

(The building can be built in both storyline and Empire modes. )