It could be easily done yourself by looking up the correct wording in example: Kanji
Then you use the word given from English to Kanji, and type that into your keyboard with your keyboard set to Japanese ( hiragana/katakana). If it is not done this way chances are it'll just be jibber letters all over the cover that make no sense. I used this method in an AMV of mine to ensure proper translation.
If you would like to know more, feel free to pm me =3