I realized I didn't need this on the first day I opened it. The purchase price on Amazon was 3,480 yen. I mistakenly thought my existing shredder was broken and bought a new one, but the new one wouldn't shred either. After checking the manual, I realized I had the settings wrong. On a whim, I switched the direction of the existing one, and it shredded without a problem, making the new one unnecessary. I've only used it to shred one sheet of paper, realizing it "wasn't broken." The manual is also in perfect condition. When I opened it, I didn't think I'd need to return it, so I opened the outer box a bit roughly. Please forgive me for that.