Russian
японский императорский дом Portuguese
casa imperial do japão Spanish
familia imperial de japon Catalan
família imperial del japó 
Members of the extended family of the reigning Emperor of Japan.
1
The Imperial House of Japan owns three symbols which are carried before the Emperor on all state occasions.
2
The sword was the sword of Murakumo, one of the three sacred treasures which comprise the insignia of the Imperial House of Japan.
3
In a period stretching back to the 7th century BC, the Imperial House of Japan is the oldest continuing hereditary monarchy in the world.