I was somewhat excited to see this because I am interested in both calligraphy and sumi-e art in general. I do like the color scheme of the keycap set, which is the most important part. However, the rest of the product could use some work.
First, why was the hiragana set called "Ainu"? The Ainu are a race of people from the northern parts Japanese islands with a traditional culture quite different than the Japanese. It seems a bit out of place here, but maybe there is a relevant history I am unaware of.
Next, with apologies to 黒土さん, the deskmat artwork looks amateurish to me. I'm not qualified to speak on the drawings, but at the least I can say that 「インク」 is not well written. The brush strokes for the ン are even backwards. It would probably best to remove the word entirely as the katakana doesn't fit the theme in general.
Edit: Just realized the signature stamp is 墨. Whoops. I thought it was the artist's name, but now it's obvious. And I'm unsure why you would have "Sumi" as the artist's signature.
First I have to apologie for the calligraphy, but I'm not able to proper write or even read in Japanese. Im actually from germany and just satisfied with japanese culture.
Yeah, the artwork is not professionally drawn because it was made by me in my spare time. I'm a student in engineering, not an actual artist.
I've choosen the Word Ainu for the Hiragana alphas, because I liked to name it after a traditional japanese race, so that the set gets more of a historical touch. By looking for a suiting name in the Internet I came to this. But the Name is able to change, so there is no bound to it.
As I said in the IC, the Set is still in work and definetly needs some extra work, until it reaches perfection. So this criticism is very usefull.
(I already thought that the things google translator is telling me aren't quiet right and here is the proof.)
Thanks for your comment!