Aoi Village is a village on the Tsutsu Plains that the Mongols occupy at the start of Act 2. Freeing it gives you the Key of Aoi, one of the keys for The Unbreakable Gosaku.
This Mythic Tale sends you to several occupied farmsteads and villages, each holding a key to Gosaku's Armor. Aoi Village is one of them.
Kuta Farmstead
Kuta Farmstead is a farm in the Kuta Grasslands of Ariake that the Mongols take at the start of Act 2. Free it for steel and one of the keys for The Unbreakable Gosaku.
Ohama Fishing Village
Ohama Fishing Village is a coastal settlement near Lake Kunehama in Tsutsu that the Mongols occupy after Komoda Beach. Freeing it gives the Key of Ohama for The Unbreakable Gosaku.
Yagata Farmstead
Yagata Farmstead is a large farm in Kashine that the Mongols seize at the start of Act 2. Rescue the hostages to free it and claim the Key of Yagata for The Unbreakable Gosaku.
Akashima Village
Akashima Village, in the prefecture of the same name, is the starting point of Norio's storyline. It has a full set of vendors, so it is a good resupply stop in western Toyotama.