Ken-syou whetstones are also known as Kensho. Both names are equally correct translations of the original Japanese name. The whetstone box says KEN-SYOU, so that's what I use.
Sharpener Mr. Masashi Fujiwara created Ken-syou stones. Made entirely by an artisan, these one-off pieces have made their way around the world in small batches and are beginning to gain a reputation for producing an insanely good shine. This series of whetstones is a low-temperature fired resinoid stone containing high-quality Japanese abrasives.
The Ken-syou stones #3000 - #10K are surface hard Splash-and-Go stones, i.e., they require little water for use. On the other hand, the #400 and #1000 stones are semi-submersible, and 5 minutes in a pool of water seemed to do the trick.