This is a large map with several closed rooms. The only way to reach the other rooms is by reaching the stairs. If there are enemies guarding it, you have to defeat them first to gain access. The general location of the stairs will take you the nearest room from it. That said, you have to divide your troops to two groups in order to cover all rooms. Also, other units can’t use the stairs if there’s a unit blocking it from the other side.
One enemy on the western room has a Master Seal while the adjacent room has an onmyoji with a Rabbit Spirit and another Master Seal. The northwest room has a chest that can be opened using the key that is held by a sniper in the same room. The chest there contains a Hexing Rod.
The northeast room has another enemy with a chest key in case you don’t have a ninja in your party. The two enemies there may drop a Silver Club and a Silver Katana upon defeat, and a chest in the corner containing a Wane Festal.
Both the NW and NE chest rooms connects to the middle room where there are a couple of Great Masters and a Master Ninja is waiting. The master ninja drops a Flame Shuriken. Once the room is cleared, you can regroup your troops and raid the next room in full force.
Finally in the last room, take out the remaining enemies there. The Spear Master drops a Bolt Naginata. After the scenes, you’ll receive the Noble Yato.