By the way, although it was recorded in historical documents that there was a merchant house called 'Naniwa no Murotsumi,' but no remains of such a house has been found yet.
なお、文献史料には「難波館（なにわのむろつみ）」と呼ばれる商館の存在も示されているが、こちらの遺構はいまだ発見されていない。