The storage space under the washstand was overflowing, and there was a gap of 18 cm between the washstand and the washing machine. I looked for one online, and I found it at Nitori! At first, I thought I'd get the three-tiered type. When I went to the store, it seemed like the four-tiered type would also be OK, so I went to the washing machine sales area in the store and roughly estimated the height, and then bought the four-tiered type. The area around the washing machine is now neat and tidy. I also wanted it to have casters, so that was also as I had hoped. It was quite some time ago since I was in the store, so I was surprised to see the self-checkout machine (lol).