After tricking the Dwelg guard into leaving his post, Arthur steps out of the whirlgate.

Dad's family can be found in one of the houses, and they will give key information. Arthur speaks to the Captain, who gives him the Katana tablet. An ingredient needed in the construction of the last Mystic Sword called Emperor. Afterwards, the man and his family mysteriously vanishes from the house. Words has it that Agron is in the Eastern Ruins.

Spoilers end here.