While I don't speak Japanese, I can give you some information that will help you sort it out.
Our Ceramic Knife Diamond Sharpener for Ceramic Knives - #94035 is the most popular ceramic knife sharpener in Japan. In fact the Japanese company, Dia Kirex, would not let MIU change the packaging for import into the USA, because they wanted to maintain their identity. Although ceramic knives last 10 times longer then steel, they eventually need to be sharpened and this great knife sharpener makes it easy. Simply swipe your ceramic knife, back and forth a few times, through the diamond sharpening mechanism. Its unique design angles your knife and sharpens both sides at once. The sharpener and non slip feet to hold it in place on your counter or tabletop and a easy to grip handle to make your sharpening easy and trouble-free. Works with all ceramic knives. NOTE: Use only a diamond sharpening mechanism on your ceramic knives - use of sharpeners, for steel knives, will only dull your ceramic blades. -- For over 15 years MIU has been producing kitchenware for the gourmet industry. Their extensive knowledge on product design, market demand and most importantly what customers want has made their products favorites all over the world. Their products are elegant and made from the finest quality materials including 18/10 stainless, ceramic, glass & natural woods. -- Size: 7L x 2H x 1.5D Inches; Color: Black
I've seen similar problems, but generally with people trying to use it to sharpen metal.
I can tell you from many years of sharpening instruments for fossil preparation that as a general rule, the lighter the touch the better - an extremely find edge is fragile and cannot be accomplished with force. The lighter the better.
But if you want to scan the instructions, I will see what I can do.