Well.. I am from Zagreb, Croatia and you'll definitely have to declare them at customs. You will have to pay import duties if the sword is to stay in Croatia. But.. it is a weapon so the best bet is to check with the nearest Croatian embassy or consulate. In Japan it is:
Embassy of Croatia in Japan
2-8-1-101, Tomigaya
Shibuya-ku
City: Tokyo
Phone: + 81 3 5478 8481
Fax: + 81 3 5478 8491
Email: veltok@...
Barney
Embassy of Croatia in Japan
2-8-1-101, Tomigaya
Shibuya-ku
City: Tokyo
Phone: + 81 3 5478 8481
Fax: + 81 3 5478 8491
Email: veltok@...
Barney