I have been storing this for a long time. There is discoloration on the blade and handle. I don't think it's rust (see photos 5 and 9). *Please understand that returns and exchanges are not accepted, so please purchase only if you agree. The blade uses V1 Gold steel, and the sides are stainless steel with a pear skin finish, making it beautiful, rust-resistant, and easy to sharpen. The handle is made with a buffalo horn octagonal handle, designed to fit comfortably in your hand. [Sensuke Santoku Knife] ■ Blade length: 165mm ■ Material: VG1 ■ Handle: Buffalo horn octagonal handle ■ Blade: Double-edged (right-handed/left-handed) *Please note ・Although it is made of rust-resistant stainless steel, after using the knife, remove any dirt and thoroughly wipe off any moisture. Leaving moisture or dirt on the knife can cause rust. ・Do not use in a dishwasher or dish dryer. ・Do not use on frozen foods, corn, pumpkin, dried mochi, or hard ingredients such as bones or shells, as this may cause chipping, cracking, or breaking of the blade. Thank you for viewing.