Franco,
You are right.
I think I may have cleaned fuchi well, but on the other hand kashira is now...
Seems like I've rubbed out bit too much. I think I'll just stop here and just oil it frequently to try my best NOT to rust it again.
Maybe I should take them to show professional when I go to Japan.
So... yeah. Learned my lesson in a hard way.
Bazza,
Just bought koshirae, no blade was included! But yes, seller did mention it was made in Edo period. Not sure about the exact year.
Yoon