Taxation on personal effects shipped during relocation to Japan (work visa)

I am relocating to Japan on a work visa in about two weeks. I have selected a moving company and they've sent me packing materials as well as documents that I need to fill out for customs. One thing I noticed is that the official forms say that even personal effects will be taxed if the total value is more than 200,000 yen. I've seen online that if they're not goods for resale then they're exempt, but the 200,000 yen limit on personal effects is a little concerning to me.

I will be bringing somewhere around $8000-10000 USD worth of stuff with me, but I have had it for a significant amount of time and I have receipts to back that up. I don't want to get hit with a $1000 tax bill so I'm trying to figure out exactly what I need to do to prepare so that I can avoid that.

The items that will be sent are gonna be unaccompanied items shipped through a moving company. Any advice is welcome.

Thanks

by Kanel0728