I purchased this item used for 8000 yen. I performed maintenance myself, including handle replacement and sharpening, but it didn't suit me, so I'm putting it up for sale. Since I've done a considerable amount of work on it myself, I'm listing it as a junk item. The modifications are as follows: * Handle Replacement I replaced the handle because it was falling apart. It currently has a handle from Tsubosan, famous for their metal files. * Back Hollow Grinding The back hollow was almost non-existent when I bought it, so I hollowed out the center of the back with a coarse grindstone. * Two-Stage Blade Edge It was sharpened to a very acute angle when I bought it, so I've sharpened it to a two-stage blade edge. * Blade Line Correction The blade line was distorted when I bought it, so I corrected it with sharpening. *It hasn't been perfectly corrected. (The center of the blade is concave.)* I think it would be best to have a professional sharpener sharpen it when using it. I would appreciate it if those who understand that this is a used item would purchase it, considering the above. The steel is high-speed steel, so I couldn't just throw it away. I've priced it low, hoping someone will take it and use it.