The Otani Toishi "Kitayama" Japanese Whetstone has become a popular stone in many sharpeners kits, although it states it is a #8000 Grit it tends to perform similarly to a 10-12k finish.
Its size is comparable to the Naniwa Chosera coming in at
205 x 75 x 25mm.
Much like the Chosera line of stones it is recommended to only briefly soak the stone till it becomes hydrated.
Using a Nagura stone will help develop a fine slurry for high quality polishing on your blade.
The Kitayama is a fantastic finishing stone for its affordable price and it maintains its consistent feel without dulling like some other stones can.
We recommend soaking the Naniwa Arata stone for only 2-3 minutes for initial sharpening, after the Chosera has been soaked it can be splashed with water to keep the surface wet.
A Nagura stone will assist in developing a slurry for finer cutting, the Nagura stone is not for flattening the whetstone, this is a common misconception.
Once finished sharpening clean the stone and allow it to air dry naturally in a shaded position, rapid drying can cause cracking, and leaving the stone in water can cause the stone to degrade.