A long forgotten Spiritual hot spot of the planet, Hidden in the mountains of Northern China, easily detectable for Mystics, since it holds a incredible ammount of raw spiritual power, once the home of the Silver Dragon Royal House, the Lords of the Eastern Dragons, known for their great power and kindness to men, now a dangerous ruin, filled with magical constructs and undead monsters, created for the sole purpose of guarding the netrance to it's inner sanctum. In the outside lies a mountain Waterfall, known as Tenkaidan (Heavenly Stairs). This location was discovered long time ago by Japanese Shinto Mystics as they travelled west in search for a runaway Oni.
The Tomb is filled with a dark pressence, being once the prision for the powerful demon Akkigan, freed from it's shackles by a Swordsman, a Knight and a God, but locked inside the swordsman mind once again, thus leaving the tomb main chamber empty, this place could work as a sealing location for a being of incredible power, since the years that Akkigan spent locked down corrupted the Main chamber with it's unholy essence, a power that drains the mystical powers of any being, god-like or mortal to empower itself. If the dark scar lef by the demon is fed the power will rise until it tooks a concrete body and decides to break free, so the power must be used wisely.
Now the location serves as a training facility for the Company agents. Since the last Guardian of the Tomb, a swordsman called Batsu, donated his house, a monastery of a evil order he once destroyed, to be a training facility, the house is located 300 mts from the entrance of the tombs, and it was originally the home of the Shinto Mystics that discovered the cave, that later were killed by the Enkouta-sou Order, the group of Pyromancing monks Batsu beated before.